A large bag of sugar weighs 7 one-half lb. How much does 1 and one-fourth bags of sugar weigh?

A. 7one-eighth
B. 8three-fourths
C. 9three-fourths
D. 9start fraction 3 over 8 end fraction

1 and one-fourth bags of sugar weigh:

7 1/2 lb × 1 1/4 = 15/2 lb × 5/4

Multiplying the fractions, we get:

15/2 lb × 5/4 = 75/8 lb = 9 3/8 lb

Therefore, the answer is D. 9 3/8.