Question

At the end of the , a shopkeeper has 12 tins of cat food left. This is 3/13 of the number he had at the beginning of the . Calculate the number of tins he had at the beginning of the .

Answer 1

52 tins of cat food are left.

Explanation:

3/13 can also be expressed as 3: 13.

3: 13

12: x

Place x under what ratio of it is present.

If it is a ratio then we cross multiply so:

3x= 156

x= 156/3= 52