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3 years ago

13

8. Bob bought a pair of tennis shoes on sale

1 answer:

mr_godi [17]3 years ago

4 0

Answer:

20%

Step-by-step explanation:

So, I would set this up as a proportion-

72 x

90 100

Cross multiply-

100 x 72 = 7200

Divide-

7200/90 = 80

Subtract-

100 - 80 = 20

So, it is a 20% decrease

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