Question

 If 2.5 pounds of a  certain grain cost $1.75, how much will 5.3 pounds of the grain cost? a. $4.79 b. $4.38 c. $3.62 d. $3.71  

Answer 1

 2.5 pounds of grain cost ======= $1.75
∴ 5.3 pounds of grain will cost ===== (5.3×1.75)/2.5 = $3.71 

Answer 2

D. 1.75:2.5•5.3=3.17