3
To calculate a fraction of a quantity, multiply the quantity by the numerator of the fraction and divide by the denominator
[tex]\frac{3}{4}[/tex] of 20 = (3 × 20 )/4 = [tex]\frac{60}{4}[/tex] = 15
[tex]\frac{3}{5}[/tex] of 20 = (3 × 20 )/5 = [tex]\frac{60}{5}[/tex] = 12
