Question

Sarah uses three and one-half pounds of clay to make 14 small vases. Use a proportion to find how many pounds of clay she will use to make 31 small vases.

A 12 and one half pounds
B 8 and three-fourths pounds
C 7 and three-fourths pounds
D 6 and one-half pounds

Answer 1

C

Explanation:

(3.5 to 14)×10=

(35 to 140)÷7=

(5 to 20) which equals 1/4

so every pound of clay, 4 vases can be made

31÷4=7.75