Elitmus Exam Numerical Ability Ratio and Proportion

A sum is divided between A and B in the ratio of 1 : 2. A purchased a car from his part, which depreciates 14 2/7% per annum and B deposited his amount in a bank, which pays him 20% interest per annum compounded annually. By what percentage will the total sum of money increase after two years due to this investment pattern (approximately).

Read Solution (Total 2)

Let the total money=300
A's part=100
B's part=200
After 2 years A's part=73.46 (As it depreciates by 14.29% per annum)
After 2 years B's part=288 (using the compound interest formula, A=P(1+r/n)^nt), where
P=200,r=0.2,n=1,t=2)
So, After 2 years total amount=361.46
Therefore % increase in money=(361.46-300)*100/300=20.48%
8 years agoHelpfull: Yes(4) No(0)

A's share=100
B's share=200
After 2 years A's share=71.428(100-si)
si(A)=200/7
After 2 years B's share=288(by compound interest)
% increase in total money=(359.428-300)/300
ans=19.81%
8 years agoHelpfull: Yes(0) No(0)

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