Answer
160 dollars
Work Step by Step
I=PRT principal=4000 dollars , R=12 %=0.12 T=4 months=$\frac{4}{12}$years=$\frac{1}{3}$ year
I=4000$\times$0.12 $\times$ $\frac{1}{3}$=4000$\times$0.04=
=160 dollars
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