SBI Clerk 2018: Quantitative Aptitude Quiz for Prelims – 26

Hello and welcome to exampundit. Here is a set of Quantitative Aptitude Quiz on Simple Interest based problems for Prelims exam of SBI Clerk 2018. 1. Anil invested an amount for three years at a simple interest rate of 9 p.c.p.a. He got an amount of Rs. 19050 at the end of three years. What principal amount did he invest?
1)14500
2)11050
3) 10950
4) 15000
5) None of these

Option: 4

Explanation:  (P * 3 * 9)/100 = (19050 – P)
P= 15000

2. Mr. Roy invested an amount of Rs. 21250 for 6 years. At what rate of simple interest will he obtain the total amount of Rs. 26350 at the end of 6 years?
1) 6
2) 5
3) 8
4)12
5) None of these

Option: 5

Explanation: Simple Interest= 26350 – 21250= 5100
R= (5100 * 100)/ (21250 * 6) = 4

3. Maya deposited an amount of Rs. 17800 and obtained Rs. 31648 at the end of 6 years. What was the rate of interest per year?
1)14.5
2)11
3) 12.5
4) 13
5) None of these

Option: 4

Explanation: Simple Interest = 31684 – 17800 = 13884
R = (13884 * 100)/ (17800 * 6) = 13

4. Mr. Dixit invested an amount of Rs. 24200 at the rate of 4 p.c.p.a for 6 years to obtain a simple interest. Later he invested the principal amount as well as the amount obtained as simple interest for another 4 years at the rate of same interest. What amount of simple interest will he obtain at the end of the last 4 years?
1) 4800
2)4850.32
3)4801.28
4) 4700
5) None of these

Option: 3

Explanation: Simple Interest = (24200 * 4 * 6)/100
= 5808
Total amount= 24200 + 5808 = 30008
Simple interest= (30008 * 4 * 4)/ 100 = 4801.28

5. What would be the simple interest obtained on an amount of Rs. 11975 at the rate of 8 p.c.p.a. after 7 years?
1)4704
2) 5705
3) 6706
4) 7707
5) None of these

Option: 3

Explanation: (11975 * 8 *7)/100 = 6706

6. In one year, if the ratio of principal and total amount becomes 8: 9, find the rate of interest.
1) 12.5
2) 10.5
3) 11.5
4) 13.5
5) None of these

Option: 1

Explanation: Principal: Amount= 8: 9
Simple interest = 9-8 = 1
Rate= (1 * 100)/ 8 = 12.5

7. Find the rate of interest so that in 10 years a sum of money becomes 7 /5 times the original sum.
1)4
2) 5
3) 6
4) 8
5) None of these

Option: 1

Explanation: Amount= 7/5 * principal
Suppose principal be 100
Then Amount will be = 7/5 * 100= 140
Simple interest= 140 – 100= 40
Rate= (40 * 100)/ ( 100* 10) = 4

8. Simple interest on a certain sum is 9 /16 th of the sum. Find the rate of interest if time and rate of interest both are numerically same.
1) 8.5
2) 7
3) 7.5
4) 8
5) None of these

Option: 3

Explanation: Simple Interest= 9/16 * Principal
Rate= (9/16 * P * 100) P * Time
Rate* Rate= 9/16*100 [Rate= Time] Rate= 30/4 = 7.5

9. A sum of money when invested at simple interest amounted to 5 times of itself after 16 years; it will become 10 times itself after how many years?
1) 30
2) 36
3) 32
4) 40
5) None of these

Option: 2

Explanation: Amount 5 times in 16 years
5 – 1 = 4 = simple interest
10 times amount means 10-1 = 9 = simple interest
Simple interest 4 will be in = 16 years
Simple interest 9 will be in = (16*9)/4 = 36

10. A sum of money becomes thrice itself at simple interest after 20 years. Find the rate of interest.
1) 12
2)15
3) 10
4)18
5) None of these

Option: 3

Explanation: Sum of money = 3 times
Principal = 1 Amount= 3 Simple interest = 3- 1=2
Rate= ( 2 * 100)/ ( 1 * 20) = 10

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