Question

Last month, when Joe took his puppy to the veterinarian, the puppy weighed 5.5 pounds. This month, the puppy weighed 7.15 pounds. What is the percentage increase of the weight of the puppy?

Answer 1

50

%

increase

Explanation:

To calculate the percent change, whether it is an increase or decrease, you can use the same method:

change

original

×

100

%

The change in the puppy's weight

=

7.8

−

5.2

=

2.6

pounds

2.6

5.2

×

100

%

=

50

%

increase

Notice that

2.6

is half of

5.2

, so an increase of

50

%

is correct.