Question

What is 3 quarters of 20?

Answer 1

$\frac { 3 }{ 4 } \cdot 20\\ \\ =\frac { 60 }{ 4 } \\ \\ =15$

Answer 2

Well, one quarter of 20 is 5 (because 20 ÷ 4 = 5).  so, to find 3 quarters, we multiply 5 times 3.

5 × 3 = 15, so 3 quarters of 20 is 15.