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Mathematics

Grade-7

Easy

Question

The weight of a dog was 54 pounds last month; this month it was 61 pounds. The percent change observed is _____%.

11%
14.5%
12.9%
13%

hint Hint:

In this question we can find the change % by finding the diffrence between old and the new weight of dog and then using the percentage formula to find the change percent.

The correct answer is: 12.9%

STEP BY STEP SOLUTION
Old weight of the dog = 54 pounds
New weight of the dog = 61 pounds
Change in the weight of dog = New weight - Old weight
Change in the weight of dog = 61 - 54 = 7 pounds
Change % = $fraction numerator C h a n g e space i n space t h e space w e i g h t space o f space d o g over denominator O l d space w e i g h t space o f space t h e space d o g end fraction cross times 100$
Change % = $7 over 54 cross times 100 equals 0.129 cross times 10 equals 12.9 straight percent sign$
The percentage change in the weight of dog = 12.9%

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