Question

rs 9000 becomes rs18000 at simple intrest in 8 years.find the rate percent per annum.

Answer 1

Heya ✋

Let see your answer !!!!!

Given that

A = ₹18,000

P = ₹9,000

T = 8 years

R = ?

Solution

S.I. = A - P

= ₹(18,000 - 9,000)

= ₹9,000

S.I. = P × R × T/100

=> 9,000 = 9,000 × R × 8 / 100

=> 9,000 × 100/9,000 × 8 = R

=> R = 25/2 % p.a.

=> R = 12.5 % p.a.




Thanks :))))

Answer 2

Answer:

The rate percent per annum is 12.5%

Step-by-step explanation:

Given;

Principal  (P) = Rs.9,000

Amount (A) = Rs. 18000

S.I = A - P

    = 18000 - 9000= Rs. 9,000

Time (t) = 8 yrs.

Rate of interest (r)= (S.I ×100) /(P×t)

                              = (9000 ×100) /(9000 ×8)

                              = 100 /8=25/2

                             = 12.5%