The compound interest on a certain sum at the end of two years is Rs 408 The simple interest on the ...........

Quantitative Aptitude (CGL) Compound Interest

The compound interest on a certain sum at the end of two years is Rs.408. The simple interest on the same sum for the same

time is Rs.400. The rate of interest per annum is:

This questions was previously asked in

SSC CGL 9th March 2020 Shift-3

80%

40%

Difference of interest = 408 - 400 = 8
In the 2nd year, extra interest counts on the interest of the 1st year so.
Interest = $$\frac{prt}{100

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