A man takes a loan of some amount at some rate of simple interest. After three years, the loan amount is doubled and rate of interest is decreased by 2%. After 5 years, if the total interest paid on the whole is Rs. 13,600, which is equal to the same when the first amount was taken for $$11\frac{1}{3}$$ years, then the loan taken initially is:
A. Rs. 13,600
B. Rs. 12,500
C. Rs. 10,000
D. Rs. 12,000
Answer: Option C
Solution(By Examveda Team)
$$\eqalign{ & \frac{{x \times r \times 3}}{{100}} + \frac{{2x \times \left( {r - 2} \right)}}{{100}} \times 5 = \frac{{x \times r}}{{100}} \times \frac{{34}}{3} \cr & \frac{{2x \times \left( {r - 2} \right) \times 5}}{{100}} = \frac{{x \times r}}{{100}} \times \frac{{34}}{3} - \frac{{x \times r \times 3}}{{100}} \cr & \frac{{2x \times \left( {r - 2} \right) \times 5}}{{100}} = \frac{{\left( {34r - 9r} \right) \times x}}{{300}} \cr & 6\left( {r - 2} \right) \times 5 = 25r \cr & \frac{{36x}}{{100}} + \frac{{2x \times 10}}{{100}} \times 5 = 13600 \cr & \frac{{136x}}{{100}} = 13600 \cr & x = {\text{Rs}}{\text{. }}10000 \cr} $$Related Questions on Interest
Find the simple interest on Rs. 5200 for 2 years at 6% per annum.
A. Rs. 450
B. Rs. 524
C. Rs. 600
D. Rs. 624
Rs. 1200 is lent out at 5% per annum simple interest for 3 years. Find the amount after 3 years.
A. Rs. 1380
B. Rs. 1290
C. Rs. 1470
D. Rs.1200
E. Rs. 1240
Interest obtained on a sum of Rs. 5000 for 3 years is Rs. 1500. Find the rate percent.
A. 8%
B. 9%
C. 10%
D. 11%
E. 12%
Rs. 2100 is lent at compound interest of 5% per annum for 2 years. Find the amount after two years.
A. Rs. 2300
B. Rs. 2315.25
C. Rs. 2310
D. Rs. 2320
E. None of these
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