Question

What is the ration of 10cm to 15cm in its simplest form?

Answer 1

10/15
2/3 is the simplest form of 10/15

Answer 2

10 : 15

Find the HCF of the two numbers and divide both by that number

That means HCF of 10 and 15 is 5

$\frac{10}{5}$ = 2

$\frac{15}{5}$ = 3

Therefore,

10 : 15

2 : 3