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Question

A bank offers 5% C.I. calculated on a half-yearly basis. A customer deposits Rs. 1600 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 is

A
Rs. 120
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B
Rs. 121
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C
Rs. 122
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D
Rs. 123
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Solution

The correct option is B Rs. 121
Amount=1600
Rate of interest=5%
Time =Half yearly basic
amount=1600×(1+52×100)2+1600×(1+52×100)
=1600×205200+205200+1600×205200
=1681+1640=3321Rs.
C.I.=33213200=121Rs.

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