Question

At what rate percent per annum will Rs 800 amount to Rs1000 in 2years.

Answer 1

A = S.I + P
1000-800 = s.i
S.I. = 200
S.I. = PRT/100
200×100 = 800×R×2
R = 200×100×1/800×1/2
R = 200/16
R = 12.5%

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Answer 2

$<b><i>Solutions:-$

We have,

Principal (p) = Rs 800

Amount (A) = Rs 1000

Time (t) = 2 years

Now,

Simple Interest (S.I) = A - p
= Rs (1000 - 800) = Rs 200

S.I = (p×r×t) /100

=> 200 = (800×r×2)/100

=> 200 × 100 = 1600 r

=> r = 20000/1600 = 12.50


Hence,

Rate = 12.5 %



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