Last month, when Joe took his puppy to the veterinarian, the puppy weighed 6.2 pounds. This month, the puppy weighed 8.68 pounds
. What is the percentage increase of the weight of the puppy? A. 2%
B. 29%
C. 71%
D. 40%
2 answers:
Short Answer: D
Solution
Difference in weight = 8.68 - 6.2 = 2.48 pounds
%increase = x
6.2 * x/100 = 2.48 Divide by 6.2 on both sides
(6.2 * x /100) ÷ 6.2 = 2.48 / 6.2 Simplify the left. Divide the right.
x / 100 = 0.4 Multiply both sides by 100
100 * x / 100 = 0.4 * 100 Combine
x = 40 %
Answer
The Puppy went up 40% in weight.
D because 6.2=100
6.2×1.4=8.68
so 100×1.4=140
140-100=40
so it's 40%
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