If 2.5 pounds of a certain grain cost $1.75, how much will 5.3 pounds of the grain cost?

First find the cost per pound: $1.75 ÷ 2.5 = $0.70 per pound. Then multiply by 5.3 pounds: 5.3 × $0.70 = $3.71, so the correct choice is $3.71.

AI-written and checked against the verified answer.