Question

Jack’s average in Math for the first nine weeks was an 88. His second nine weeks
average decreased 12.5%. What was his average for the second nine weeks? (Can you show how you got the answer?)

Answer 1

Answer:

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Step-by-step explanation:

Well 10% of 88= 8.8

5% then would be 4.4, so then 2.5% would be 2.2.

So it would be 10% (8.8) + 2.5% (2.2) = 10.1

So for the second nine weeks his average decreased by 12.5% (10.1) so it would be, 88-10.1= 77.9

Answer = 77.9