Question

A dog's weight increased by 50% in 3 years. By the end of 3 years, the dog weighed 45 pounds. How much did the dog weigh 3 years ago? A. 45 pounds B. 60 pounds C. 90 pounds D. 30 pounds

Answer 1

ANSWER D 30 Pounds
All other answer choices are either equal to or larger than 45, 30 is the only rational answer without having to do math.

Answer 2

The answer to your question is the letter D. 30 pounds

Explanation:

Data

increase = 50%

final weighed = 45 pounds

Process

1.- Use proportions to solve this problem. 45 pounds will be 150% (the initial 100% plus an increase of 50%).

45 pounds ------------------ 150%

x pounds ----------------- 100%

x = (100 x 45)/150

x = 4500/150

Result

x = 30 pounds