1.

For 75% rate on certain money find the ratio of difference between CI and SI for 2 years and 3 years.1. 4 : 152. 2 : 153. 4 : 254. 2 : 255. 2 : 5

Answer» Correct Answer - Option 1 : 4 : 15

Given:

Rate = 75%

Formula used:

For 2 years, CI – SI = P(r/100)2

for 3 years, CI – SI = P(r/100)2 [(300 + r)/100]

Calculation

(CI – SI) for 2 years : (CI – SI) for 3 years = P(r/100)2 : P(r/100)2 (300 + r)/100

⇒ (CI – SI) for 2 years : (CI – SI) for 3 years = 100 : (300 + r)

⇒ (CI – SI) for 2 years : (CI – SI) for 3 years = 100 : (300 + 75)

⇒ (CI – SI) for 2 years : (CI – SI) for 3 years = 100 : 375 = 4 : 15

∴ Required ratio is 4 : 15


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