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SparkleDiamond

$12.40 is the answer

We have 4 months and 12 percent so 4/12 is 1/3, then you divide 12% by 3 and you get 4% 4% is .04 and .04 and then .04 times 310 is 12.4 or 12.30

Chelboy

Answer:12.4

Step-by-step explanation:

Simple interest=(principal×rate×time)÷100

Simple interest=(310×12×4/12)÷100

Simple interest=1240÷100

Simple interest=12.4

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