# How Many Days Taken by Them? If

The rates of working of A and B are in the ratio 3:4. The number of days taken by them to finish the work are in the ration:

- 3:4
- 9:16
- 4:3
- None of these

**Answer: (3) 4 : 3**

**Explanation:-**

The rates working of A and B are in the ratio = 3 : 4

The number of days taken by them = in the inverse ratio of working ratio.

Then , the number of days taken by them to finish the work are in the ratio = 4 : 3

Hence, the answer is (3) 4 : 3.