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Rainbow [258]
3 years ago
7

Maria invested $450 in a savings account and earned $126 in interest at the end of 7 years.

Mathematics
1 answer:
Brut [27]3 years ago
5 0
The interest rate is B. 4%

Given:
Principal = 450
Interest = 126
term = 7 
rate = ?

Simple Interest is computed by multiplying the Principal, rate, and term.

Interest = P × r × t

126 = 450 × r × 7
126 = 3150r
r = 126/3150
r = 0.04 x 100% = 4%

To check:

I = 450 
× 0.04 x 7
I = 18 × 7
I = 126
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