Mathematical Reasoning第 53 / 120 题
If 5 pencils cost $1.25, how much do 8 pencils cost at the same rate?
a.$2.00
b.$1.60
c.$2.50
d.$1.85
解析
Each pencil costs $1.25 ÷ 5 = $0.25, so 8 pencils cost 8 × $0.25 = $2.00. Finding the unit rate lets you scale to any quantity. Unit pricing is a common real-world calculation.
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