Question

A sum when reckoned at simple interest at 3.5% p.A. Amounts to rs. 364.80 after 4 years. Find the sum.

Answer 1

Answer:

according to question :-

let principal be x so

we know that SI = Amount - Principal

and also SI = p*r*t/100

so

SI = SI

amount - p = p*r*t/100

364.80 - x = x*3.5*4/100

364.80-x = x*3.5/25

364.80-x = x*7/50

364.80-x = 7x/50

50(364.80-x) = 7x

18240-50x = 7x

18240 = 7x+50x

18240 = 57x

18240/57 = x

₹320 = x

so x = Principal = ₹320

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