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 25 of 35.
Sankalp said:
2 years ago
Please explain, why the remaining work is 1.
(60)
Kalai said:
1 year ago
How remaining work =1? Please explain to me.
(7)
Ashim said:
1 year ago
How 7/60 came? Anyone, please explain to me.
(14)
BIKASH SAHOO said:
10 years ago
(1-7/15) this process I can not understood.
Sudhansu said:
10 years ago
1-7/15 applied because the whole work is 1.
Karthik said:
8 years ago
how 1-7/15 came? Please explain it clearly.
Pooja said:
6 years ago
How 7/60 came? Please explain me to get it.
John michael said:
1 year ago
15 + 20 = 35,
15 * 20 = 300,
35/300 = 7/60.
15 * 20 = 300,
35/300 = 7/60.
(34)
Sree said:
8 months ago
How 7/60 came? please anyone explain to me?
(33)
Rajesh said:
1 decade ago
Why (1 - 7/15) ?
What is total work as 1.
What is total work as 1.
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