
Concepts
 Practice Questions
 Important Formulas
 A sum of ₹1550 was lent partly at 5% and partly at 8% simple interest. The total interest received after 3 years is ₹300. Then the ratio of money lent at 5% to that at 8% is
 8:5
 16:15
 5:8
 31:6
Answer is b
2. A person invests money in three different schemes for 6 years, 10 years and 12 years at 10 percent, 12 percent and 15 percent simple interest respectively. If at the completion of each scheme, he gets the same interest. The ratio of his investment is
 2:3:4
 3:4:2
 6:3:2
 3:4:6
Answer is c
3. An old article is available for ₹12,000 at cash payment or is available for ₹7,000 cash payment and a monthly installment of ₹630 for 8 months. The rate percent per annum is
 3 percent
 3.3 percent
 2.1 percent
 3.25 percent
Answer is c
4. A man invests half his capital at the rate of 10% per annum, onethird at 9% and the rest at 12% per annum. Then the average rate of interest per annum, which he gets is
 10%
 12%
 9%
 10.5%
Answer is a
5. When an amount of Rs. 7,930 given on loan at 5% simple interest to A, B, and C for 2, 3, and 4 years respectively by dividing into three parts. If the amounts of all three are considered equal after their respective periods of loan, then A received a loan of
 Rs 2760
 Rs 2800
 Rs 3050
 Rs 2750
Answer is a
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