Aptitude - Time and Work - Discussion
Discussion Forum : Time and Work - General Questions (Q.No. 14)
14.
P can complete a work in 12 days working 8 hours a day. Q can complete the same work in 8 days working 10 hours a day. If both P and Q work together, working 8 hours a day, in how many days can they complete the work?
Answer: Option
Explanation:
P can complete the work in (12 x 8) hrs. = 96 hrs.
Q can complete the work in (8 x 10) hrs. = 80 hrs.
 P's1 hour's work = |
1 | and Q's 1 hour's work = | 1 | . |
| 96 | 80 |
| (P + Q)'s 1 hour's work = |  |
1 | + | 1 |  |
= | 11 | . |
| 96 | 80 | 480 |
| So, both P and Q will finish the work in | |
480 | |
hrs. |
| 11 |
| Number of days of 8 hours each = |
|
480 | x | 1 | |
= | 60 | days = 5 | 5 | days. |
| 11 | 8 | 11 | 11 |
Discussion:
57 comments Page 5 of 6.
Ash said:
8 years ago
Why 12*8 is taken? 12 days n 8 hrs =96hrs how it comes?
Please explain it.
Please explain it.
Tuhinaa said:
9 years ago
The explanation is a bit lengthy. Is there any shortcut to solve it.
ARCHANA said:
1 decade ago
I could not understand this question can anyone explain it please.
Akshal said:
4 years ago
Hi @Joel.
How did you assume 10 days and 8 hours? Please explain.
How did you assume 10 days and 8 hours? Please explain.
(3)
Supriya said:
1 decade ago
How can we solve this 480/11 * 1/8..and how came the ans 60/11 ?
Saniya said:
9 years ago
Why did 1/8 is taken in ratio but not the above hours?
(1)
Henry said:
10 years ago
What amount of work are they to complete?
Shridhar said:
1 decade ago
Sagarika your explaination is very nice.
Srikanth said:
1 decade ago
Why should we take 11/480 as 480/11 ?
Anshik said:
1 decade ago
Why multiplied by 1/8 and not 8 ?
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