1.

A bank offers 10% compound interest per half year. A customer deposits Rs. 2000 each on 1st January and 1st July of a year. At the end of the year, the amount he would have gained by way of interest is1). Rs. 12402). Rs. 3103). Rs. 1554). Rs. 620

Answer»

A bank offers 10% COMPOUND interest per half year. A customer deposits Rs. 2000 each on 1st January and 1st July of a year.

Compound interest for FIRST 6 months = Rs. 2000 × [1 + (10/100)] = Rs. 2200

So, interest = Rs. 2200 - 2000 = Rs. 200

Principal amount for next 6 months = Rs. 2000 + 2200 = Rs. 4200

So, the compound interest for LAST 6 months = Rs. 4200 × [1 + (10/100)] = Rs. 4620

So, interest = Rs. 4620 - 4200 = Rs. 420

∴ The total interest gained = Rs. 200 + 420 = Rs. 620


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