Simple Interest & Compound Interest

Q. I got an annual income of Rs 688.25 from Rs 10, 000 invested partly at the rate 8% per annum and partly by 5% per annum at the SI. How much of my money is invested at the rate of 5%?

1. Rs 3725
2. Rs 4225
3. Rs 4800
4. Rs 5000

Q. Pratibha invests an amount of Rs. 15, 860 in the names of her three daughters A, B and C in such a way that they get the same interest after 2, 3 and 4 years respectively. If the rate of simple interest is 5% p.a., then the ratio of the amounts invested among A, B and C will be :

1. 6 : 7 : 8
2. 5 : 10 : 12
3. $\frac{1}{10}:\frac{1}{15}:\frac{1}{20}$
4. 6 : 5 : 4

Q. What will be the amount if a sum of Rs 10, 000 is placed at CI for 3 yrs while the rate of interest for the first, second, and third years is 10%, 5%, and 2%, respectively?

1. Rs 11, 231
2. Rs 11, 244
3. Rs 11, 781
4. Rs 11, 658

Q. Hans Kumar borrows Rs 7000 at simple interest from the village moneylender. At the end of 3 years, he again borrows Rs 3000 and closes his account after paying Rs 4615 as interest after 8 years from the time he made the first borrowing. Find the rate of interest.

1. 4.5%
2. 5.5%
3. 6.5%
4. 3.5%

Q. A sum is invested for 3 yrs compounded at 5%, 10%, and 20% per annum, respectively. In 3 yr, if the sum amounts to Rs 1386, then find the sum.

1. Rs 1200
2. Rs 1000
3. Rs 1500
4. Rs 1400

Q. A sonata watch is sold for Rs. 440 cash or for Rs. 200 cash down payment together with Rs. 244 to be paid after one month. Find the rate of interest charged in the instalment scheme :

1. 10%
2. 15%
3. 20%
4. 25%

Q. Akbar lends twice the interest received from Birbal to Chanakya at the half of the interest at which he lent to Birbal. If Akbar lent Rs. P @ r% per annum for 1 year to Birbal, then the interest received by Akbar from Chanakya is :

1. ${\left(\frac{Pr}{10}\right)}^2$
2. $\frac{P{r}^2}{100}$
3. $p{\left(\frac{r}{10}\right)}^2$
4. $p{\left(\frac{r}{100}\right)}^2$

Q. Three persons Amar, Akbar and Anthony invested different amounts in a fixed deposit scheme for one year at the rate of 12% per annum and earned a total interest of Rs 3, 240 at the end of the year. If the amount invested by Akbar is Rs 5000 more than the amount invested by Amar and the amount invested by Anthony is Rs 2000 more than the amount invested by Akbar, what is the amount invested by Akbar?

1. Rs 12, 000
2. Rs 7000
3. Rs 5000
4. Rs 10, 000

Q. A sum of Rs. 2500 is lent out in two parts; one at 12% p.a. and another at 12.5% p.a. for one year. If the total annual income is Rs. 306, the money lent at 12% is :

1. 1000
2. 1500
3. 1300
4. 1200

Q. Equal amounts of each Rs. 43892 is lent to two persons for 3 years. One @ 30% SI and second @ 30% CI annually. By how much percent the CI is greater than the simple interest received in this 3 years duration?

1. None of these
2. 33%
3. 33.33%
4. 23%