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Mathematics, 08.06.2021 18:20 alexmiranda00

A credit card company charges a late fee of 10% on all late payments. Last month, jamal was charged a late fee. The total amount paid, including the late fee, was $275. What was the original amount on the credit card before the late fee?

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Answer from: Quest

what's that

ansver
Answer from: Quest

7

step-by-step explanation:

ansver
Answer from: Quest

step-by-step explanation:

the ratio of red paint to blue paint is always 9/7. that means that, whatever x's value, (4x+12)/(4x-4) has that same ratio. so, set up an equation and cross-multiply to solve for x:

 

9/7 = (4x+12)/(4x-4)

9(4x-4) = 7(4x+12)

36x - 36 = 28x + 84

8x - 36 = 84

8x = 120

x = 15

ansver
Answer from: Quest
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A credit card company charges a late fee of 10% on all late payments. Last month, jamal was charged...

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