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
2 answers:
Answer:
The answer to your question is the letter D. 30 pounds
Step-by-step 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
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.
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