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:
345 comments Page 33 of 35.
Aadesh said:
8 years ago
28/60=14/30=7/15 @Pooja.
Swamy akunoori said:
1 decade ago
Good explanation anshu.
Pooja said:
8 years ago
How, (7/60 * 4) = 7/15?
Guna said:
7 months ago
Agree, the answer is D.
(5)
Yusuf said:
4 years ago
A+b 1 days work =7/60.
(2)
Deepak said:
1 decade ago
Why are using 1-7/15?
Mohsin said:
10 years ago
How (7/60*4) = 7/15?
Md Afif said:
4 years ago
How 1-7/15? Explain.
(3)
Pradeepshne said:
1 decade ago
Wow really superb.
Hashir Quraishi said:
1 decade ago
Swetha you rocked.
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