Question

If A = x% of y
and B = y% of x,
then show that A = B.

Answer 1

A = x % of y

= x /100 × y

= xy/100

B = y % of x

= y/100 × x

= xy/100

so A = B

Answer 2

Hey there,

x% of y = x x/y = y x/x = y% of x
100 100

A = B. 

Hope this helps!