Question

If rupees 250 amounts to rupees 285 in 2 years . Find the rate percent per annum

Answer 1

Given 
principle = Rs 250
Amonut = Rs 285
Time = 2 years
Let rate of interest = r%

Interest = principle * time * rate of interest/100
             = 250 * 2 *r/100
             = Rs 5r
Amount = principle + interest
285 = 250 + 5r
5r = 35
r = 7%
Rate of interest = 7%

Answer 2

Heya ☺

Given that

A = ₹285

P = ₹250

T = 2 years

R = ?

Solution

S.I. = A - P

= ₹(285 - 250)

= ₹35

S.I. = P×R×T/100

=> 35 = 250×R×2/100

=> 35 = 5R

=> R = 35/5

=> R = 7 % p.a.




Thanks