Aptitude - Time and Work - Discussion
Discussion Forum : Time and Work - General Questions (Q.No. 1)
1.
A can do a work in 15 days and B in 20 days. If they work on it together for 4 days, then the fraction of the work that is left is :
Answer: Option
Explanation:
| A's 1 day's work = | 1 | ; |
| 15 |
| B's 1 day's work = | 1 | ; |
| 20 |
| (A + B)'s 1 day's work = |  |
1 | + | 1 |  |
= | 7 | . |
| 15 | 20 | 60 |
| (A + B)'s 4 day's work = | |
7 | x 4 | |
= | 7 | . |
| 60 | 15 |
| Therefore, Remaining work = | |
1 - | 7 | |
= | 8 | . |
| 15 | 15 |
Discussion:
351 comments Page 31 of 36.
Manoj said:
1 decade ago
35/300=7/60 please explain it.
Komal said:
8 years ago
Can you explain how 7/60 came?
Meenu said:
7 years ago
Thanks for explaining @Swetha.
Zak said:
3 years ago
How come 7/60? Please explain.
(29)
Sivagami said:
2 years ago
How 7/60 came? Please explain.
(6)
Anshuman said:
1 decade ago
Oh! Thanks I understood well.
Depl said:
1 decade ago
Oh! Thanks I understood well.
Kamal said:
1 decade ago
I didn't undestand last step.
Prathyusha said:
1 decade ago
Why we takes total work as 1?
MUHAMMAD SHAHID ZAFAR said:
10 years ago
Why you subtract 7/15 from 1?
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