## RS Aggarwal Class 8 Solutions Chapter 11 Compound Interest Ex 11D

These Solutions are part of RS Aggarwal Solutions Class 8. Here we have given RS Aggarwal Solutions Class 8 Chapter 11 Compound Interest Ex 11D.

**Other Exercises**

- RS Aggarwal Solutions Class 8 Chapter 11 Compound Interest Ex 11A
- RS Aggarwal Solutions Class 8 Chapter 11 Compound Interest Ex 11B
- RS Aggarwal Solutions Class 8 Chapter 11 Compound Interest Ex 11C
- RS Aggarwal Solutions Class 8 Chapter 11 Compound Interest Ex 11D

**Tick the correct answer in each of the following**

**Question 1.**

**The compound interest on Rs. 5000 at 8% per annum for 2 years, compounded annually, is**

**(a) Rs. 800**

**(b) Rs. 825**

**(c) Rs. 832**

**(d) Rs. 850**

**Solution:**

Principal (P) = Rs. 5000

Rate (R) = 8% p.a.

Period (n) = 2 years

**Question 2.**

**The compound interest on Rs. 10000 at 10% per annum for 3 years, compound annually, is**

**(a) Rs. 1331**

**(b) Rs. 3310**

**(c) Rs. 3130**

**(d) Rs. 13310**

**Solution:**

Principal (P) = Rs. 10000

Rate (R) = 10% p.a.

Period (n) = 3 years

**Question 3.**

**The compound interest on Rs. 10000 at 12% per annum for years, compounded annually, is**

**(a)Rs. 1872**

**(b) Rs. 1720**

**(c) Rs. 1910.16**

**(d) Rs. 1782**

**Solution:**

Principal (P) = Rs. 10000

Rate (R) = 12% p.a.

**Question 4.**

**The compound interest on Rs. 4000 at 10% per annum for 2 years 3 months, compounded annually, is**

**(a) Rs. 916**

**(b) Rs. 900**

**(c) Rs. 961**

**(d) Rs. 896**

**Solution:**

Principal (P) = Rs. 4000

Rate (R) = 10% p.a.

Period (a) = 2 years 3 months

**Question 5.**

**A sum of Rs. 25000 was given as loan on compound interest for 3 years compounded annually at 5% per annum during the first year, 6% per annum during the second year and 8% per annum during the third year. The compound interest is**

**(a) Rs. 5035**

**(b) Rs. 5051**

**(c) Rs. 5072**

**(d) Rs. 5150**

**Solution:**

Principal (P) = Rs. 25000

Rate (R1) = 5% for the first year

R2 = 6% for the second year

R3 = 8% for the third year

**Question 6.**

**The compound interest on Rs. 6250 at 8% per annum for 1 year, compounded half yearly, is**

**(a) Rs. 500**

**(b) Rs. 510**

**(c) Rs. 550**

**(d) Rs. 512.50**

**Solution:**

Principal (P) = Rs. 6250

Rate (R) = 8% p.a. or 4% half yearly

Period (n) = 1 year or 2 half years

**Question 7.**

**The compound interest on Rs. 40000 at 6% per annum for 6 months, compounded quarterly, is**

**(a) Rs. 1209**

**(b) Rs. 1902**

**(c) Rs. 1200**

**(d) Rs. 1306**

**Solution:**

Principal (P) = Rs. 40000

Rate (R) = 6% p.a. = % quarterly

Period (n) = 6 months = 2 quarters

**Question 8.**

**The present population of a town is 24000. If it increases at the rate of 5% per annum, what will be its population after 2 years ?**

**(a) 26400**

**(b) 26460**

**(c) 24460**

**(d) 26640**

**Solution:**

Present population (P) = 24000

Rate of increase (R) = 5% p.a.

Period (n) = 2 years

**Question 9.**

**The value of a machine depreciates at the rate of 10% per annum. It was purchased 3 years ago for Rs. 60000. What is the present value of the machine?**

**(a) Rs. 53640**

**(b) Rs. 51680**

**(c) Rs. 43740**

**(d) Rs. 43470**

**Solution:**

3 years ago, the value of machine = Rs. 60000

Rate of depreciation (R) = 10%

Period (n) = 3 years

**Question 10.**

**The value of a machine depreciates at the rate of 20% per annum. It was purchased 2 years ago. If its present value is Rs. 40000, for how much was it purchased ?**

**(a) Rs. 56000**

**(b) Rs. 62500**

**(c) Rs. 65200**

**(d) Rs. 56500**

**Solution:**

Present value = Rs. 40000

Rate of depreciation (R) = 20% p.a.

Value of machine 2 years ago

**Question 11.**

**The annual rate of growth in population of a town is 10%. If its present population is 33275, what was it 3 years ago ?**

**(a) 25000**

**(b) 27500**

**(c) 30000**

**(d) 26000**

**Solution:**

Rate of growth in population (R) = 10%

Present population = 33275

Population 3 years ago = A

**Question 12.**

**If the simple interest on a sum of money at 5% per annum for 3 years is Rs. 1200 then the compound interest on the same for the same period at the same rate will be**

**(a) Rs. 1225**

**(b) Rs. 1236**

**(c) Rs. 1248**

**(d) Rs. 1261**

**Solution:**

S.I. = Rs. 1200

Rate (R) = 5%

Period (T) = 3 years

**Question 13.**

**If the compound interest on a sum for 2 years at % per annum is Rs. 510, the simple interest on the same sum at the same rate for the same period of time is**

**(a) Rs. 400**

**(b) Rs. 450**

**(c) Rs. 460**

**(d) Rs. 480**

**Solution:**

C.I. on a sum = Rs. 510

Rate (R) = % = % p.a.

Period (n) = 2 years

**Question 14.**

**The sum that amounts to Rs. 4913 in 3 years at % per annum compounded annually, is**

**(a) Rs. 3096**

**(b) Rs. 4076**

**(c) Rs. 4085**

**(d) Rs. 4096**

**Solution:**

Amount = Rs. 4913

Rate (R) = = %

Period (n) = 3 years

**Question 15.**

**At what rate per cent per annum will a sum of Rs. 7500 amount to Rs. 8427 in 2 years, compounded annually ?**

**(a) 4%**

**(b) 5%**

**(c) 6%**

**(d) 8%**

**Solution:**

Sum (P) = Rs. 7500

Amount (A) = 8427

Period = 2 years

Let R be the rate of p.a., then

Hope given RS Aggarwal Solutions Class 8 Chapter 11 Compound Interest Ex 11D are helpful to complete your math homework.

If you have any doubts, please comment below. Learn Insta try to provide online math tutoring for you.

Aditya says

You should add test paper of book also