Question

What is 75% of 32

Answer 1

These are three quarters - divide 32 by 4 and then multiply by 3.

Answer 2

why?

Answer 3

divide by 4 and multilpy by three wont doi oanythging you should multilpy them 75/100 multiplied by 32/1 that would do the trick right?

Answer 4

Actually, 75/100 = 3/4 and you can always write \[ {a over b} * c = a * {1 over b} * c = ac *{1 over b} = ac : b \] So, my trick is to divide whole number by denominator (this follows from the fact that dividing by factor is multiplying by reciprocal and vice versa) and then multiplying by numerator.

Answer 5

Sorry:
\[{a \over b} * c\]

Answer 6

\[{a \over b} *c = ac * {1 \over b} = ac : b\]