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:
344 comments Page 34 of 35.
Esha said:
1 decade ago
How did 7/20 come?
Mounika said:
1 decade ago
Why 300 will come?
Ramkumar said:
1 decade ago
Nice work swetha.
Keshav said:
10 years ago
Nice explanation.
Nanda said:
9 years ago
How you got 7/15?
Jagannath naik said:
7 years ago
How to find 1/15?
Ni333 said:
1 decade ago
Thanks analyser.
Poorni said:
1 decade ago
Why (1 - 7/15)?
/mat said:
1 decade ago
Why 1/15, 1/20?
Vivek said:
9 years ago
How 7/60 came?
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