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 29 of 35.
Sunita said:
1 decade ago
Why they take like this 1-(7/15)?
Devi sri prasad said:
1 decade ago
I think LCM is the best solution.
Vikas said:
9 years ago
Can you explain how is 7/60 came?
Shiva said:
8 years ago
Why sub (1-7/15)? please explain.
Sunil said:
1 decade ago
How that 60 came I can't got it?
Priya said:
10 years ago
How 7 came please tell me again?
Harkanwal said:
9 years ago
Why 32 by 60? Explain in detail.
Tabbu said:
7 years ago
Please explain this step 1-7/15.
Subho said:
7 years ago
Kindly solve it in ratio method.
Vishwanath said:
1 decade ago
7/60 x4 =7/15 please explain me
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