Question

42.5% of what is 20.57

Answer 1

In math,
"of" is the same as "×" and "is" means "="

42.5% of x = 20.57
42.5% × x = 20.57
.425x = 20.57
x = 20.57/.425
x = 48.4

42.5% of 48.4 is 20.57