induction of 400 amount to 480 in 4 years what will it amount to if the rate of interest is increased by 2%
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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
Step-by-step explanation:
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
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