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Answer 1

Answer:

(9) 2 years (10)  Rs. 3000.

Step-by-step explanation:

9) Simple Interest (I)  = PTR/100

I = Rs. 240

P - Principal  = Rs. 2400

T - term - T

R = Rate - 5%.

=> 240 = 2400 * T * 5 / 100

=> T = 240 * 100 / 2400 * 5

=> T = 2 years.

10) Simple Interest (I)  = PTR/100

I = Rs. 450

P = Principal = P

T = 3 years

R = 5%

=> 450 = P * 3 * 5 / 100

=> P = 450 * 100 / 3 * 5

=> P =  Rs. 3000.