4. Find the difference between
Compound Interest and Simple
Interest on Rs 45,000 at 12% per
annum for 2 years.
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Given :-
- Principal = P = Rs.45,000
- Rate = R = 12% per annum.
- Time = T = 5 years.
To Find :-
- The difference between Compound Interest and Simple Interest = CI - SI = ?
Solution :-
we know that, when rate is annually ,
- SI = (P * R * T)/100
- CI = P[{1 + (R/100)}^T - 1]
so,
→ CI - SI = P[{1 + (R/100)}^T - 1] - (P * R * T)/100
putting all given values we get,
→ CI - SI = 45000[{1 + (12/100)}⁵ - 1] - (45000 * 12 * 5)/100
→ CI - SI = 45000[{1 + (3/25)}⁵ - 1] - 450 * 60
→ CI - SI = 45000[(28/25)⁵ - 1] - 27000
→ CI - SI = 45000[1.76234 - 1] - 27000
→ CI - SI = 45000 * 0.76234 - 27000
→ CI - SI = 34305.3 - 27000
→ CI - SI = Rs.7305.3 (Ans.)
Hence, the difference between Compound Interest and Simple Interest for 5 years is Rs.7305.3 .
Learn more :-
CI in 2yr is Rs. 1600 and in 3 yrs it will be Rs. 1700. Find the rate of interest.
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