Hello Aspirants. Welcome to Online Quants Quiz in AffairsCloud.com. Here we are creating question sample in **Simple Interest**, which is common for all the IBPS, RRB exam and other competitive exams. We have included Some questions that are repeatedly asked in exams !!

**A Principal amount give Rs.12750 as SI for 7 years at the rate of 10% to get the same amount of interest of 10 years, what will be the rate of interest ?**

A)5%

B)7%

C)9%

D)4%

E)None of these

**B)7%56**

Explanation :

SI = PNR/100

= 12750*7*10/100 = 8925

SI = 8925

R = 8925*100/12750*10 = 7

**Vithya gave Rs.20000/- to Priya for 5 years and Rs.30000/- to Vijay for 2 years. If the rate of interests is the same and she received Rs.12800- as SI from both. What is the rate of interest?**

A)8%

B)7%

C)9%

D)11%

E) None of these

**A)8%**

Explanation :

20000*5*R/100 + 30000*2*R/100 = 12800

1600R = 12800

R = 12800/1600 = 8

**The difference between CI and SI on the same sum for 2 yrs at the rate of 25% pa is Rs.1500. What is the principal lent out in each case ?**

A) Rs.18000

B)Rs.21000

C)Rs.23000

D)Rs.24000

E) None of these

**D)Rs.24000**

Explanation :

P(r/100)^{2}= 1500

P(25/100)^{ 2}= 1500

P*1/16 = 1500

P = 1500*16 = 24000

**A man took a certain sum as loan from bank at a rate of 9% SI per annum. The man lends the same amount to another person at 15% SI per annum. If at the end of 4 years man made a profit of Rs. 9000 from the deal. What was the original sum ?**

A)Rs.32,700

B)Rs.39000

C)Rs.37500

D)Rs.32500

E) None of these

**C)Rs.37500**

Explanation :

P*15*4/100 – P*9*4/100 = 9000

60P – 36P/100 = 9000

24P= 900000

P = 37500

**If the difference between CI and SI earned on a certain amount at 15% pa at the end of 3 years is Rs.3200, find out the principal.**

A)Rs.42560

B)Rs.42560

C)Rs.45000

D)Rs.45150

E) None of these

**D)Rs.45150**

Explanation :

Sum = D*100^{3}/r^{2}(300+r)

S = 3200*100^{3}/15^{2}(300+15)

S = 3200*100*100*100/225*315

= 45149.9 = 45150

**What will be the ratio of simple interest earned by certain amount at the same rate of interest for 8 years and that for 12 Years?**

A)2:3

B)3:2

C)1:4

D)1:3

E) None of these

**A)2:3**

Explanation :

PR8/100 : PR12/100 = 8PR :12PR

8:12 = 2:3

**At what rate per cent per annum will be simple interest on a sum of money be 3/5 of the Principal amount in 6 years?**

A)7%

B)12%

C)10%

D)6%

E) None of these

**C)10%**

Explanation :

P =X, SI = 3/5x

R = (3x/5 *100)/x*6

= 10%

**A sum of money becomes 7/4 of itself in 5years at a certain rate of interest. What is the rate of interest?**

A)15%

B)18%

C)20%

D)22%

E) None of these

**A)15%**

Explanation :

SI = 7/4x – 1 = x(7– 4)/4 = 3x/4

R = 3x/4*100/x*5 = 300/20 = 15%

**A sum of money lent out at SI amount to Rs.7000 after 2 years and Rs.14000 after a further period of 5yrs. Find the principal ?**

A)Rs.6300

B)Rs.5100

C)Rs. 4200

D)Rs.3700

E) None of these

**C)Rs. 4200**

Explanation :

SI for 5 yrs = 14000(7yr) – 7000(2yr) = 7000

SI for 2 yrs = 7000*2/5 = 2800

P = 7000 – 2800 =4200

[/spoiler]**In what time will Rs.3500 become Rs. 4700 at 4(1/5)%pa SI ?**

A)6yrs

B)9yrs

C)8yrs

D)5yrs

E) None of these

**C)8yrs**

Explanation :

SI = 4700 – 3500 = 1200

R = 21/5%

SI = PNR/100

1200 = 3500*21*N/100*5

N = 1200*100*5/3500*21 = 8.16 = 8yrs

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