Simple Interest Practice Test 1

Question : 3 of 40

Marks: +1, -0

An amount doubles itself at the end of 8 years with a certain rate of simple interest. What will be the total simple interest on Rs. 8000 at that rate at the end of 4 years?

Rs. 2000
Rs. 4000
Rs. 6000
None of these

Validate

Solution:

Let principal = Rs. x; then amount = Rs. 2x; I = 2x – x = Rs. x

R={x×100}/{x×8}=25/2%

Again,

I = {8000 ×25 ×4}/ {100× 2}

= Rs. 4000

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