Aptitude - Time and Work - Discussion
Discussion Forum : Time and Work - General Questions (Q.No. 2)
2.
A can lay railway track between two given stations in 16 days and B can do the same job in 12 days. With help of C, they did the job in 4 days only. Then, C alone can do the job in:
Answer: Option
Explanation:
| (A + B + C)'s 1 day's work = | 1 | , |
| 4 |
| A's 1 day's work = | 1 | , |
| 16 |
| B's 1 day's work = | 1 | . |
| 12 |
 C's 1 day's work = |
1 | - |  |
1 | + | 1 |  |
= | |
1 | - | 7 | |
= | 5 | . |
| 4 | 16 | 12 | 4 | 48 | 48 |
| So, C alone can do the work in | 48 | = 9 | 3 | days. |
| 5 | 5 |
Discussion:
226 comments Page 15 of 23.
Shivu said:
1 decade ago
Hi thanks all of you solving this problem in easy methods.
Ayush said:
1 decade ago
Can anybody explain the basic to know how the 48/5 comes?
Sai Kumar said:
6 years ago
1/4- (1/16+1/12) = (1/4-7/48) please anyone explain this.
Deekshit said:
4 years ago
Why the fraction 5/48 is changed to 48/5? Please explain.
Ashlyn cicilia said:
6 months ago
Why is 5/48 take as its reciprocal? Please explain to me.
(23)
Sonu said:
1 decade ago
Why do we take fraction and add and subtract everything?
Indian said:
1 decade ago
@ Ovii
Thanks for explanation, Now I understood well.
Thanks for explanation, Now I understood well.
Sathya said:
1 decade ago
@Shantanu.
Your explain is very short and very sweet.
Your explain is very short and very sweet.
Rajesh said:
1 decade ago
Please explain:
1/4-7/48 = 5/48.
5/48 how it comes?
1/4-7/48 = 5/48.
5/48 how it comes?
Carlo said:
1 decade ago
1/4 = 1/16 + 1/12 + 1/X.
X = 9.6 days or 9 3/5 days.
X = 9.6 days or 9 3/5 days.
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