Question

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A sum of money amounts to rs52,080 in 2 years and to rs77,280 in 7 years, at simple intrest. Find the sum and rate percentage of interest


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Answer 1

Step-by-step explanation:

A sum of money amounts to rs52,080 in 2 years and to rs77,280 in 7 years, at simple intrest. Find the sum and rate percentage of interest

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Answer 2

Step-by-step explanation:

Question -

A sum of money amounts to rs52,080 in 2 years and to rs77,280 in 7 years, at simple intrest. Find the sum and rate percentage of interest.

Answer -

P(1+2r/100)=52080

pr= 50(52080-p)

p(1+7r/100)=77280

pr=100(77280-p) /7

50(52080-p)=100(77280-p)/7

when u will solve it,u will get p=42000.

42000(1+2r/100)=52080

r=12 percent.

Also u can see the picture above.

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