Math, asked by jatinsharma38, 11 months ago

Ramesh borrowed from Suresh certain sum for 2 years at simple interest
He lent this sum to Dinesh at the same rate for 2 vears compound interest
At the end of 2 years Ramesh received 110 as compound interest from Dinesh but paid 100 as simple interest to Suresh. Find the aum and rate of interest​

Answers

Answered by amitnrw
0

Sum = Rs 250 , Rate of interest = 20%

Step-by-step explanation:

Amount = 100P

Rate of interest = R

Simple interest in 2 Years = 100P * R * 2/100

= 2PR

2PR = 100

=> PR = 50

Compound interest = 100P(1 + R/100)² - 100P

=> 100P(1 + R²/10000 + 2R/100 - 1)

= PR²/100  + 2PR

= PR (R/100 + 2)

PR (R/100 + 2)  = 110

=> 50(R/100 + 2)  = 110

=> 5(R + 200)/100 = 11

=> R + 200 = 220

=> R = 20%

PR = 50

=> P * 20 = 50

=> P = 2.5

100P = 250

Sum = Rs 250

Rate of interest = 20%

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