Question

A certain sum amounts to rupees 12100 in two years and rupees 13310 in three years at the rate of 10 percent p. a. Find the sum

Answer 1

Answer:

Step-by-step explanation:

In first case

Given - Principal =?

Rate of interest = 10 %

Years = 2

Amount = 12100

Amount = Principal (1 + R / 100) raised to N

12100 = Principal (1 + 10 / 100) raised to 2

12100 = Principal x 11 / 10 x 11 / 10

Principal = 12100 x 10 x 10 / 11 x 11

= 1210000 / 121

= 10000

Therefore Principal is rs. 10000

In second case

Given - Principal =?

Rate of interest = 10%

Years = 3

Amount = 13310

Amount = Principal (1 + R / 100) raised to N

13310 = Principal (1 + 10 / 100) raised to 3

13310 = Principal x 11 / 10 x 11 / 10 x 11 / 10

Principal = 13310 x 10 x 10 x 10 / 11 x 11 x 11

= 13310000 / 1331

= 10000

Therefore the principal will be rs. 10000

Answer 2

Answer:

this questions answer is 100000