If the compound interest on a certain sum for 2 years at 10% p.a. is R

1.	If the compound interest on a certain sum for 2 years at 10% p.a. is Rs.630, the simple interest at the same rate of interest for two years would be?1. Rs.4202. Rs.6003. Rs.6404. Rs.630
Answer» Correct Answer - Option 2 : Rs.600 Given: Time = 2 years Rate (R) = 10% C.I. = Rs.630 Formula used: S.I. = (P × R × T)/100 A = P(1 + R/100)n Where A → amount n → time S.I. → Simple Interest P → Principal R → Rate T → Time Calculations: Let the principal be Rs. P. C.I. = P(1 + 10/100)² - P ⇒ 630 = P{(121/100) - 1} ⇒ P = Rs.3000 Now S.I. = (3000 × 10 × 2)/100 ⇒ S.I. = Rs.600 ∴ The simple interest is Rs.600.

If the compound interest on a certain sum for 2 years at 10% p.a. is Rs.630, the simple interest at the same rate of interest for two years would be?1. Rs.4202. Rs.6003. Rs.6404. Rs.630

Answer» Correct Answer - Option 2 : Rs.600

Given:

Time = 2 years

Rate (R) = 10%

C.I. = Rs.630

Formula used:

S.I. = (P × R × T)/100

A = P(1 + R/100)n

Where A → amount

n → time

S.I. → Simple Interest

P → Principal

R → Rate

T → Time

Calculations:

Let the principal be Rs. P.

C.I. = P(1 + 10/100)² - P

⇒ 630 = P{(121/100) - 1}

⇒ P = Rs.3000

Now

S.I. = (3000 × 10 × 2)/100

⇒ S.I. = Rs.600

∴ The simple interest is Rs.600.

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If the compound interest on a certain sum for 2 years at 10% p.a. is Rs.630, the simple interest at the same rate of interest for two years would be?1. Rs.4202. Rs.6003. Rs.6404. Rs.630

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