# Math - Pre Algebra

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Simple and Compound Interest

Find the simple interest.

principal= \$870
interest rate= 6%
time= 9 months

• Math - Pre Algebra -

simple interest = principal x rate x time
= 870(.06)(9/12) = .....

• Math - Pre Algebra -

The simple interest paid on a loan after 6 months was \$306. The annual interest rate was 8%. Find the principal

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