Question

3/5 of sweets are red
and the rest are blue.
Write the ratio blue to red.

Answer 1

If 3/5 of sweets are red, the remaining sweets represent the

`1-(3)/(5)=(5)/(5)-(3)/(5)=(2)/(5)`

of the total. So, 3/5 are red and 2/5 are blue.

The blue to red ratio is

`(2)/(5)/(3)/(5)=(2)/(5)\cdot(5)/(3)=(2)/(3)`