Q. 134.3( 11 Votes )

# If the compound i

Answer :

Compound interest, CI = Rs.510

Interest rate, R = 12 % = 25/2% per annum

Time = 2 years

CI = P (1 + R/100)n – P

510 = P (1 + (25/2)/100)2 – P

510 = P (1 + 1/8)2 – P

510 = P (9/8)2 – P

510 = 81P/64 – P

510 = (81P – 64P)/64

510 = 17P/64

P = 510 × 64/17

P = 30 × 64

P = 1920

Now,

SI = PRT/100

= (1920 × 25/2 × 2)/100

= (1920 × 25)/100

= 480

Simple interest = Rs.480

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