Q169
A can do a piece of work in 70 days and B is 40% more efficient then A. Then the number of days taken by B to do the same work is = ?
A.
40 dayd
B.
60 days
C.
50 days
AnswerD.
45 days
Answer: Option C
Solution
Answer: Option C
Solution:
| A | : | B | |
| Efficiency → | 100% | : | 140% |
| 5 | : | 7 | |
| ⤩ | |||
| Time | 7 | : | 5 |
| ×10↓ | ↓×10 | ||
| Actual Time | 70 days | 50 days |