Question

10. On a certain sum of money, lent out at C.I.,
interests for first, second and third years are
* 1,500; * 1,725 and 2,070 respectively.
Find the rate of interest for the (i) second year
(ii) third year.​

Answer 1

Answer:

☞Total interest obtained in the first year = Rs, 1500

☞Interest for the second year - Total interest obtained in the first year

• Rs. 1725 - Rs. 1500
• Rs. 225

☞Rate of interest for the second year

• 225/1500×100 = 15%

☞Interest for the third year

• Rs. 2,070 - Rs. 1,725
• Rs. 345

☞Rate of interest for the third year

• 345/1725 ×100 = 20%

☞second year and third year are 15% and 20%

respectively.

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