Question

robyn saves $204 and spends $32.50 on books. she wants to purchase more books from a sale where they cost $8.15 each.
which answer gives the best estimate for the number of books robyn can buy?
○ 21
○ 192
○ 200
○ 8

Explanation:

Step1: Calculate remaining money

$\$204 - \$32.50 = \$171.50$

Step2: Estimate number of books

Round $\$171.50$ to $\$170$, round $\$8.15$ to $\$8$.
$\frac{170}{8}=21.25$

Step3: Match to closest option

21.25 is closest to 21.

Answer:

21