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 26 of 36.
Pooja said:
7 years ago
How 7/60 came? Please explain me to get it.
John michael said:
2 years ago
15 + 20 = 35,
15 * 20 = 300,
35/300 = 7/60.
15 * 20 = 300,
35/300 = 7/60.
(35)
Sree said:
1 year ago
How 7/60 came? please anyone explain to me?
(33)
Bhawana said:
5 months ago
Please explain me about the remaining work.
(12)
Rajesh said:
1 decade ago
Why (1 - 7/15) ?
What is total work as 1.
What is total work as 1.
AKT said:
4 years ago
Thanks everyone for explaining the answer.
(3)
Ayansh said:
3 years ago
How (1/15+1/20) = 7/60? Please explain me.
(37)
NADIPUDI SIRISHA said:
2 years ago
Thank you for explaining the answer @Giri.
(26)
Sowmiya said:
2 years ago
How remaing work =1? Please explain to me.
(20)
Hemamalini said:
2 years ago
How remaining work =1 ? Please explain me.
(35)
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