Time and work concept [closed]
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$L$, $M$, and $P$ can do a certain piece of work in $15$, $20$, and $40$ days, respectively. They started the work together. M left the work after $4$ days of starting and $P$ left the work before $3$ days of completion. In how many days will the work be completed?
calculator
edited Dec 10 '18 at 15:51
Math Girl
631318
asked Dec 10 '18 at 15:13
Aritrodip RoyAritrodip Roy
1
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closed as off-topic by José Carlos Santos, Yuriy S, Arnaud D., Robert Z, Lord_Farin Dec 12 '18 at 17:36
This question appears to be off-topic. The users who voted to close gave this specific reason:
- "This question is missing context or other details: Please provide additional context, which ideally explains why the question is relevant to you and our community. Some forms of context include: background and motivation, relevant definitions, source, possible strategies, your current progress, why the question is interesting or important, etc." – José Carlos Santos, Yuriy S, Arnaud D., Robert Z, Lord_Farin
If this question can be reworded to fit the rules in the help center, please edit the question.
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$begingroup$
$L$, $M$, and $P$ can do a certain piece of work in $15$, $20$, and $40$ days, respectively. They started the work together. M left the work after $4$ days of starting and $P$ left the work before $3$ days of completion. In how many days will the work be completed?
calculator
edited Dec 10 '18 at 15:51
Math Girl
631318
asked Dec 10 '18 at 15:13
Aritrodip RoyAritrodip Roy
1
$endgroup$
closed as off-topic by José Carlos Santos, Yuriy S, Arnaud D., Robert Z, Lord_Farin Dec 12 '18 at 17:36
This question appears to be off-topic. The users who voted to close gave this specific reason:
- "This question is missing context or other details: Please provide additional context, which ideally explains why the question is relevant to you and our community. Some forms of context include: background and motivation, relevant definitions, source, possible strategies, your current progress, why the question is interesting or important, etc." – José Carlos Santos, Yuriy S, Arnaud D., Robert Z, Lord_Farin
If this question can be reworded to fit the rules in the help center, please edit the question.
add a comment |
$begingroup$
$L$, $M$, and $P$ can do a certain piece of work in $15$, $20$, and $40$ days, respectively. They started the work together. M left the work after $4$ days of starting and $P$ left the work before $3$ days of completion. In how many days will the work be completed?
calculator
edited Dec 10 '18 at 15:51
Math Girl
631318
asked Dec 10 '18 at 15:13
Aritrodip RoyAritrodip Roy
1
$endgroup$
$L$, $M$, and $P$ can do a certain piece of work in $15$, $20$, and $40$ days, respectively. They started the work together. M left the work after $4$ days of starting and $P$ left the work before $3$ days of completion. In how many days will the work be completed?
calculator
calculator
edited Dec 10 '18 at 15:51
Math Girl
631318
asked Dec 10 '18 at 15:13
Aritrodip RoyAritrodip Roy
1
edited Dec 10 '18 at 15:51
Math Girl
631318
asked Dec 10 '18 at 15:13
Aritrodip RoyAritrodip Roy
1
edited Dec 10 '18 at 15:51
Math Girl
631318
edited Dec 10 '18 at 15:51
Math Girl
631318
edited Dec 10 '18 at 15:51
Math Girl
631318
631318
asked Dec 10 '18 at 15:13
Aritrodip RoyAritrodip Roy
1
asked Dec 10 '18 at 15:13
Aritrodip RoyAritrodip Roy
1
asked Dec 10 '18 at 15:13
Aritrodip RoyAritrodip Roy
1
1
closed as off-topic by José Carlos Santos, Yuriy S, Arnaud D., Robert Z, Lord_Farin Dec 12 '18 at 17:36
This question appears to be off-topic. The users who voted to close gave this specific reason:
- "This question is missing context or other details: Please provide additional context, which ideally explains why the question is relevant to you and our community. Some forms of context include: background and motivation, relevant definitions, source, possible strategies, your current progress, why the question is interesting or important, etc." – José Carlos Santos, Yuriy S, Arnaud D., Robert Z, Lord_Farin
If this question can be reworded to fit the rules in the help center, please edit the question.
closed as off-topic by José Carlos Santos, Yuriy S, Arnaud D., Robert Z, Lord_Farin Dec 12 '18 at 17:36
This question appears to be off-topic. The users who voted to close gave this specific reason:
- "This question is missing context or other details: Please provide additional context, which ideally explains why the question is relevant to you and our community. Some forms of context include: background and motivation, relevant definitions, source, possible strategies, your current progress, why the question is interesting or important, etc." – José Carlos Santos, Yuriy S, Arnaud D., Robert Z, Lord_Farin
If this question can be reworded to fit the rules in the help center, please edit the question.
add a comment |
add a comment |
2 Answers
2
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oldest
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Hint: compute how much each one does in a day. How much did M do in total? How much did P do? How much is left for L?
answered Dec 10 '18 at 15:21
Ross MillikanRoss Millikan
295k23198371
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add a comment |
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Let $W$ be the amount of work. $L$,$P$,$M$ does $frac{W}{15},frac{W}{20},frac{W}{40}$ much work per day. Let $d$ days be needed for three of them to complete the work, then:
$$frac{W}{15}cdot 4+frac{W}{20}cdot d+frac{W}{40}cdot (d-3)=W.$$
Can you solve the equation and find $d$?
The answer:
$d=11$ days
answered Dec 10 '18 at 16:14
farruhotafarruhota
20.2k2738
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add a comment |
2 Answers
2
active
oldest
votes
2 Answers
2
active
oldest
votes
active
oldest
votes
active
oldest
votes
$begingroup$
Hint: compute how much each one does in a day. How much did M do in total? How much did P do? How much is left for L?
answered Dec 10 '18 at 15:21
Ross MillikanRoss Millikan
295k23198371
$endgroup$
add a comment |
$begingroup$
Hint: compute how much each one does in a day. How much did M do in total? How much did P do? How much is left for L?
answered Dec 10 '18 at 15:21
Ross MillikanRoss Millikan
295k23198371
$endgroup$
add a comment |
$begingroup$
Hint: compute how much each one does in a day. How much did M do in total? How much did P do? How much is left for L?
answered Dec 10 '18 at 15:21
Ross MillikanRoss Millikan
295k23198371
$endgroup$
Hint: compute how much each one does in a day. How much did M do in total? How much did P do? How much is left for L?
answered Dec 10 '18 at 15:21
Ross MillikanRoss Millikan
295k23198371
answered Dec 10 '18 at 15:21
Ross MillikanRoss Millikan
295k23198371
answered Dec 10 '18 at 15:21
Ross MillikanRoss Millikan
295k23198371
answered Dec 10 '18 at 15:21
Ross MillikanRoss Millikan
295k23198371
295k23198371
add a comment |
add a comment |
$begingroup$
Let $W$ be the amount of work. $L$,$P$,$M$ does $frac{W}{15},frac{W}{20},frac{W}{40}$ much work per day. Let $d$ days be needed for three of them to complete the work, then:
$$frac{W}{15}cdot 4+frac{W}{20}cdot d+frac{W}{40}cdot (d-3)=W.$$
Can you solve the equation and find $d$?
The answer:
$d=11$ days
answered Dec 10 '18 at 16:14
farruhotafarruhota
20.2k2738
$endgroup$
add a comment |
$begingroup$
Let $W$ be the amount of work. $L$,$P$,$M$ does $frac{W}{15},frac{W}{20},frac{W}{40}$ much work per day. Let $d$ days be needed for three of them to complete the work, then:
$$frac{W}{15}cdot 4+frac{W}{20}cdot d+frac{W}{40}cdot (d-3)=W.$$
Can you solve the equation and find $d$?
The answer:
$d=11$ days
answered Dec 10 '18 at 16:14
farruhotafarruhota
20.2k2738
$endgroup$
add a comment |
$begingroup$
Let $W$ be the amount of work. $L$,$P$,$M$ does $frac{W}{15},frac{W}{20},frac{W}{40}$ much work per day. Let $d$ days be needed for three of them to complete the work, then:
$$frac{W}{15}cdot 4+frac{W}{20}cdot d+frac{W}{40}cdot (d-3)=W.$$
Can you solve the equation and find $d$?
The answer:
$d=11$ days
answered Dec 10 '18 at 16:14
farruhotafarruhota
20.2k2738
$endgroup$
Let $W$ be the amount of work. $L$,$P$,$M$ does $frac{W}{15},frac{W}{20},frac{W}{40}$ much work per day. Let $d$ days be needed for three of them to complete the work, then:
$$frac{W}{15}cdot 4+frac{W}{20}cdot d+frac{W}{40}cdot (d-3)=W.$$
Can you solve the equation and find $d$?
The answer:
$d=11$ days
answered Dec 10 '18 at 16:14
farruhotafarruhota
20.2k2738
answered Dec 10 '18 at 16:14
farruhotafarruhota
20.2k2738
answered Dec 10 '18 at 16:14
farruhotafarruhota
20.2k2738
answered Dec 10 '18 at 16:14
farruhotafarruhota
20.2k2738
20.2k2738
add a comment |
add a comment |
