Lexi purchased [tex]1\frac{1}{2}[/tex] pounds of green apples and [tex]\frac{3}{4}[/tex] pounds of red ones. In total, she purchased
[tex]1\dfrac{1}{2}+\dfrac{3}{4}=\dfrac{3}{2}+\dfrac{3}{4}=\dfrac{3\cdot 2+3}{4}=\dfrac{9}{4}[/tex] pounds of apples.
If apples cost $1.08 per pound, then the total cost is
[tex]\$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.[/tex]
Answer: $2.43
