12. The difference between the compound interest for 1 year, compounded half-yearly and the
simple interest for 1 year on a certain sum of money at 10% per annum is Rs. 360. Find the sum
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Given :
The difference between the compound interest for 1 year, compounded half-yearly and the simple interest for 1 year on a certain sum of money at 10% per annum is Rs. 360.
To Find:
Find the sum
Solution:
Let the sum be x
Rate of interest = 10% = 0.1
Time = 1 year
No. of compounds per year = n = 2
Compound Interest = Amount - Principal = 1.1025 x-x=0.1025x
Simple interest =
The difference between compound interest and simple interest is Rs.360
So,0.1025x-0.1x=360
0.0025x=360
x=144000
Hence the sum is Rs.144000
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