Question

The distance a spring will stretch varies directly with how much weight is attached to the spring. If a spring stretches 11 inches with 75 pounds attached, how far will it stretch with 65 pounds attached? Round to the nearest tenth of an inch.
a. 10.9
b. 9.5
c. 11.2
d. 12.7

Answer 1

11/75 = x/65.....11 in. to 75 lbs. = x in. to 65 lbs.
cross multiply
(75)(x) = (65)(11)
75x = 715
x = 715/75
x = 9.53 rounds to 9.5 <==