Question

the average of fraction is 3/8. one of the fractions is 1/2. find the other fraction?

Answer 1

3/8 *2 -1/2=1/4

Answer 2

let the other fraction be x
given the average of the two fractions is 3/8
(1/2+x)/2=3/8
1/2+x=6/8
1/2+x=3/4
subtract 1/2 from both sides
x=3/4-1/2
x=3/4=2/4
x=1/4
so the other fraction is 1/4

Answer 3

why did you divide by two?

Answer 4

average of two numbers a and b is (a+b)/2
similarly average of three is calculated by (a+b+c)/3