Question

Q.4
The CI on Rs. 4000 lent at 10% p.a. for one year, if the interest is payable half yearly
is
(a) Rs. 400 (b) Rs. 550 (c) Rs. 420 (d) Rs. 410​

Answer 1

Answer:

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Step-by-step explanation:

Principal P=Rs.4,000.

Since the interest is compounded half-yearly the number of conversion periods in 11/2 years are 3.

Also the rate of interest per conversion period (6 months) is

10%×21=5%(0.05 in decimal).

Thus

the amount An(in Rs.) is given by

An=P(1+i)n

A3=4,000(1+0.05)3

=4,630.50

Therefore

The compound interest is =Rs. (4,630.50−4,000)

=Rs.630.50.

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