Question

A sum lent out at simple interest becomes 4480rs in 3 years and 4800rs in 5 years. Find the sum and the
rate of interest.
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Answer 1

Answer:

Principal = Rs.400, Amount = Rs.480

Simple Interest = Rs.(480−400)(480−400)

=Rs.80

Time = 4 years

Rate in percentage =SI×100P×TSI×100P×T

Rate in percentage =80×100400×4=80001600=580×100400×4=80001600=5%

New rate of interest

=(5+2)=7(5+2)=7%

Interest=400×7×4100=112400×7×4100=112

Hence amount=Rs.(400+112)(400+112)

=Rs.512

Answer 2

Answer:

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Step-by-step explanation:

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