PERCENT INCREASE OR DECREASE
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12. Write the three rules which relate the Amount, the Base, and the
13. To find the unknown number, multiply only to find the Amount.
Amount ÷ Base
Apply the rules to the following banking problems. To recognize which is the Amount and which is the Base, rephrase each problem in this form:
___ is ___% of ___ ?
15. Harold deposited $1,250 in a bank where the rate of interest is 3%
16. Irene wants to earn $300 in interest towards her vacation next year.
17. Jane deposited $800 and got $32 in interest. What was the rate of
18. If the bank pays 5¼% interest, and you deposit $2500, how much
19. Jason received an interest payment of $137.50 from a deposit of
20. earn? $41.69
20. deposit? $12,608.70
22. Raymond deposited $1600 into a CD, for which he got $76.50 in
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