WBBSE Class 10 Maths Arithmetic Chapter 1 Simple Interest Multiple Choice Questions

WBBSE Class 10 Maths Arithmetic Chapter 1 Simple Interest Multiple Choice Questions

Example 1. If the interest of t P at the rate of simple interest of ₹ P per annum in t years is I, then

1. I = prt
2. prtI = 100
3. prt = 100 x I
4. None of these

Solution: I=prt100 or, prt = 100 x I

∴ The answer is prt = 100 x I

Read And Learn Also WBBSE Class 10 Maths Multiple Choice Questions

Example 2. A principal becomes twice its amount in 20 years at a certain rate of simple interest at the same rate of simple interest, that principal becomes thrice its amount in

1. 30 years
2. 35 years
3. 40 years
4. 45 years

Solution:

∴ The answer is 3. 40 years

Class 10 Maths Arithmetic Chapter 1 MCQs

Example 3. If a principal becomes twice its amount in 10 years the rate of simple interest per annum is

1. 5%
2. 10%
3. 15%
4. 20%

Solution:

∴ The answer is 2. 10%

Example 4. If the total interest becomes ₹ x for any principal having the rate of simple interest of x%. per annum for x years then the principal will be

1. x
2. 100x
3. 100x
4. 100x2

Solution: x = P×x×x100 or, P = 100x

∴ The answer is 3. 100x

Example 5. The total interest of a principal in n years at the rate of simple interest of r% per annum is pnr25, the principal will be

1. ₹ 2p
2. ₹ p²
3. ₹ 4p
4. ₹ p4

Solution: P×x×x100 or, principal = 4p

∴ Answer is p2

Example 6. The time in which the ratio of interest and principal be 3: 2 when rate is 10% per annum

1. 12 years
2. 15 years
3. 16 years
4. 18 years

Solution: Simple interest = PRT100

or, T = 15

∴ The answer is 15 years.

Example 7. If a certain sum of money is tripled itself in 1312 years, then the rate of interest is

1. 10%
2. 12 12%
3. 15%
4. 20%

Solution: Simple interest = PRT100

∴ The answer is 15%

Arithmetic Progression Mcqs Class 10

Example 8. If n be the no. of years, r% be the rate of interest, and the simple intcrest= Pnr50. The principal is

1. P
2. 2P
3. P2
4. None of these

Solution:

∴ Principle = 2P

∴ Answer is 2P

Example 9. A sum of money trebles itself in 30 years. Rate of interest is

1. 623
2. 15%
3. 10%
4. 6%

Solution: (3P- P) = P×R×30100

∴ Answer is 623

Wbbse Class 10 Maths Arithmetic Notes

Example 10. If the interest of P in n years at r% Simple interest be I then

1. I = Prn
2. Prn I = 100
3. Pnr = 100 I
4. Pnr = I100

Solution: I=Pnr100 or, Pnr = 100 I

∴ Answer is Pnr = 100 I

Example 11. If the interest of 2P in t years at r2% Simple interest be I, then the interest of ? P in I2 years at r% Simple interest is

1. I2
2. 2I
3. 4I
4. I4

Solution: I=2P×t×r2×100 or, I=Prt100

∴ P×r100×t2=I2

∴ The answer is 1. I2

Example 12. The simple interest of ₹ 3000 in 2 years at the rate of 9% per annum is

1. ₹ 180
2. ₹ 270
3. ₹ 540
4. ₹ 630

Solution: 

∴ The answer is 3. ₹ 540.

Class 10 Arithmetic Chapter 1 Mcqs With Answers

Example 13. The interest of a certain amount of money in x year at x% Simple interest is ₹ x². Then the amount is

1. ₹ 100
2. ₹ 100x
3. ₹ 100x2
4. ₹ 10x

Solution: Px⋅x100=x2,P=100x2x2=100

∴ The answer is 1. ₹ 100

Example 14. If the ratio of the Principal and amount for 1 year (i.e. Principal + interest) is 20: 21, then the rate of interest p.a. is

1. 4%
2. 412%
3. 5%
4. 512%

Solution: Let Principal be ₹ 20x and amount be ₹ 21x, (x > 0)

∴ Interest = ₹ (21x – 20x) = ₹ x

∴ x=20x×1×r100, r = 5

∴ 3. The answer is 5%