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The interest on an investment varies directly as the rate of interest. If the interest is $41 when the interest rate is
4%, find the interest when the rate is
7.2%



Sagot :

Answer:

Interet varies directly as rate

I=KR

K=I/R

K=41/4

=10.25

I=KR

I=10.25R

I=10.25*7.2

I=$73.8

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