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 24 of 36.
Sumit sharma said:
1 decade ago
Please some one tell how 1/10:1/15:1/20 comes 6:4:3?
Lakshmanan S said:
2 years ago
How come remaining work 1- 7/15? Please explain me.
(71)
Irfan said:
2 years ago
How to find out the remaining work? Please explain.
(45)
Suba said:
1 decade ago
Why we subtract with one? can you please explain.
Kiran said:
1 decade ago
Can you explain How you got = (1/15+1/20) = 7/60?
Satish said:
1 decade ago
1/15+1/20= 7/60 How ? Please explain me clearly.
Viky said:
1 decade ago
I'm confused, can anybody tell me how 7/60 came?
Priya said:
1 decade ago
Can any one please say, how (1-7/15) is applied?
Anoof said:
1 decade ago
60 divides 4 by 15 times that means 4 * 15 = 60.
SFG said:
9 months ago
Thanks for explaining the answer @Anjali thakur.
(18)
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