Math, asked by shrishtijaiswal672, 6 months ago

Rohan borrowed a certain sum of money at simple interest. Rate of interest was 3% per annum for first 3 years, 4% per annum for next 5 years and 6% per annum for next 7 years. If he paid Rs 2059 as interest, then what is the sum borrowed (in Rs)?

A) 2400 B) 2500 C) 2900 D) 3100

Answers

Answered by Anonymous
7

SI. (1) = X × 3 × 3 / 100

= 9X / 100

SI (2) = X × 4 × 5 / 100

= 20X / 100

SI (3)= X × 6 × 7 / 100

42 X / 100

TOTAL SI = 9X / 100 + 20X / 100 + 42X/100

71X/100

71X / 100 = 2059

71X = 205900

X = 2900 Rs.

Therefore ,

Principal :- 2900 Rs.

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