If you are trying to find the interest, it would be $60.00. To get this just multiply everything. Hope this helps!!! :)
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Remember that when you find 30% of the number you have to subtract the 30% from your original $90 because it is 30% off the original price.
Answer:
b/a=9, 9 is the answere
Step-by-step explanation:
i did it mentally lol