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11 June, 12:48

Regina's average balance checking account pays simple interest of 3.6% annually, and she made $2.31 in interest last month. What was Regina's average balance last month?

A. $770.00

B. $77.00

C. $7.70

D. $7700.00

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Answers (1)
  1. 11 June, 12:56
    0
    3.6%/12=0.3% monthly

    Balance last month

    2.31/0.003=770
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