# 6  Arif took a loan of Rs 80,000 from a bank. If the rate of interest is 10% per annum, find the difference in amounts he would be paying after     years if the interest is-   (i) compounded annually.     (ii) compounded half yearly.

(i) Given,

Principal amount, P = Rs 80000

Rate of interest, R = 10% p.a.

Time period =  years.

We know, Amount when interest is compounded annually, A =

Now, For the first year, A=

For the next half year, this will act as the principal amount.

Interest for 1/2 year at 10% p.a =

Required total amount = Rs (88000 + 4400) = Rs 92400

(ii) If it is compounded half yearly, then there are 3 half years in  years.

n = 3 half years.

And, Rate of interest = half of 10% p.a = 5% half yearly

The difference in the two amounts = Rs (92610 - 92400) = Rs 210

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