Question

lexi went to the store to purchase apples which cost $1.08 per pound. she purchased 1 1/2 pounds pf green apples and 3/4 of red ones. how much did the apples cost?

Answer 1

Lexi purchased $1\frac{1}{2}$ pounds of green apples and $\frac{3}{4}$ pounds of red ones. In total, she purchased

$1\dfrac{1}{2}+\dfrac{3}{4}=\dfrac{3}{2}+\dfrac{3}{4}=\dfrac{3\cdot 2+3}{4}=\dfrac{9}{4}$ pounds of apples.

If apples cost $1.08 per pound, then the total cost is

$\ 1.08\cdot \dfrac{9}{4}=\ \dfrac{108}{100}\cdot \dfrac{9}{4}=\ \dfrac{54}{50}\cdot \dfrac{9}{4}=\ \dfrac{27\cdot 9}{50\cdot 2}=\ \dfrac{243}{100}=\ 2.43.$

Answer: $2.43