Question

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A sum of money at simple interest amount to rs 815 in 3 yrs and to 854 in 4 yrs. What is the principle?

Answer 1

Answer:

698

Step-by-step explanation:

SI for 1 year =854−815=39

SI for 3 years =39×3=117

Required sum =815−117=698

Answer 2

Hello..!!

Sum of money in 3 years = Rs 815

Sum of money in 4 years = Rs 854

( As interest remains same every year so, )

Simple interest for 1 year = sum in 4 years

- sum in 3 years

Rs 854 - Rs 815

= Rs 39

Simple interest for 3 years = S.I for 1 year × 3

39 × 3

= Rs 117

Principle = Sum in 3 years - S.I in 3 year

Rs 815 - Rs 117

= Rs 698

Hope it helps..!!