**Q1. A man took a loan of 25220 at compound interest at rate of 5% for a three year. A man promise to return a loan in three equal installment each year. What is the value of each installment? **

(a) 9264 Rs.

(b) 9261 Rs.

(c) 9278 Rs.

(d) 9284 Rs.

**Q2. Compound interest of sum borrowed in 1( 1/2) year is 4590 Rs. if rate of interest 6% annually then amount of sum borrowed is? **

(a) 58,000 Rs.

(b) 54,000 Rs.

(c) 52,000 Rs.

(d) 50,000 Rs.

**S2. Ans.(d)**

**Sol.** For 6 month rate of interest =6/2=3%

Time =3/2 year

C.I. = 6 + 3 +(6 × 3)/100=9.18%

Let sum borrowed = P

P×9.18/100=4590

P = 50,000 Rs.

**Q3. What sum will give 22.12 Rs as the difference between simple interest and compound interest in 3 years. If the rate of interest for first year, second year and third year is 1%, 2% & 3% respectively. **

(a) 20000Rs.

(b) 22500Rs.

(c) 24000Rs.

(d) 23500Rs.

**S3. Ans.(a)**

**Sol.** S.I. = 1% + 2% + 3% = 6%

C.I. = 1%, 2%, 3%

1+2+(1×2)/100=3.02%,3%

3.02+3+(3.02×3)/100=6.1106%

C.I – S.I = .1106%

Sum =(22.12 × 100)/.1106⇒20000 Rs

**Q4. A mobile can be purchased at 1500 Rs or 350 Rs cash and 3 annual installment of 400 Rs each. What is the rate of interest? **

**Q5. A certain sum become 66300 in 10 years. And 99450 Rs in 20 years. What is the sum? **

(a) 42200 Rs

(b) 44200 Rs

(c) 44800 Rs

(d) 43200 Rs

**Q6. If simple interest & compound interest of a certain sum is 400 and 410 respectively. Find out the rate of interest? **

(a) 5%

(b) 6%

(c) 7%

(d) 8%

**Q7. The ratio of difference of compound interest and simple interest for 3 years and 2 years is 19 : 6. What is the rate of the interest?**