Question

Find the number halfway between 3/5 and 7/10

Answer 1

The answer is 13/20

The number (n) halfway between x and y is:
n = (x + y) : 2

The number (n) halfway between 3/5 and 7/10 is:
n = (3/5 + 7/10) : 2
n = (6/10 + 7/10) : 2
n = 13/10 : 2
n = 13/10 : 2/1
n = 13/10 * 1/2
n = 13/20