A man completes of a job in 10 days. At this rate, how many more days will it takes him to finish the job?
Question:
A man completes of a job in 10 days. At this rate, how many more days will it takes him to finish the job?
[A].
5
6
7
A man completes of a job in 10 days. At this rate, how many more days will it takes him to finish the job?
[A].
[B].
[C].
[D].
| 7 | 1 |
| 2 |
Answer: Option B
Explanation:
| Work done = | 5 |
| 8 |
| Balance work = | 1 – | 5 | = | 3 | ||
| 8 | 8 |
Let the required number of days be x.
| Then, | 5 | : | 3 | = :: 10 : x | 5 | x x = | 3 | x 10 | |
| 8 | 8 | 8 | 8 |
| x = | 3 | x 10 x | 8 | ||
| 8 | 5 |
x = 6.