Quantitative Aptitude Questions and Answers section on “Simple Interest” with solution and explanation for competitive examinations such as CAT, MBA, SSC, Bank PO, Bank Clerical and other examinations.

# The simple interest on 7300 Rs. from 11 May, 1987 to 10 september, 1987 (both days included) at 5% per annum is :

The simple interest on 7300 Rs. from 11 May, 1987 to 10 september, 1987 (both days included) at 5% per annum is : [A]103 Rs. [B]123 Rs. [C]200 Rs. [D]223 Rs. Show Answer 123 Rs. Time from 11 May to 10 September, 1987 = 21 + 30 + 31 + 31 + 10 = 123

# A man had 16000 Rs., part of which he lent at 4% and the rest at 5% per annum simple interest. If the total interest received was 700 Rs. In one year, the money lent at 4% per annum was :

A man had 16000 Rs., part of which he lent at 4% and the rest at 5% per annum simple interest. If the total interest received was 700 Rs. In one year, the money lent at 4% per annum was : [A]6000 Rs. [B]8000 Rs. [C]10000 Rs. [D]12000 Rs. Show Answer 10000 Rs. Let the

# A person deposited 400 Rs. for 2 years, 550 Rs. for 4 years and 1200 Rs. for 6 years. He received the total simple interest of 1020 Rs. The rate of interest per annum is :

A person deposited 400 Rs. for 2 years, 550 Rs. for 4 years and 1200 Rs. for 6 years. He received the total simple interest of 1020 Rs. The rate of interest per annum is : [A]5% [B]10% [C]15% [D]20% Show Answer 10% Let the rate of interest be R per cent per annum. Hence

# 1000 Rs. is invested at 5% per annum simple interest. If the interest is added to the principal after every 10 years, the amount will become 2000 Rs. after :

1000 Rs. is invested at 5% per annum simple interest. If the interest is added to the principal after every 10 years, the amount will become 2000 Rs. after : [A] [B] [C] [D] Show Answer After 10 years Principal for 11th year = 1000 + 500 = 1500 Rs. ∴ Total time Hence option

# A man lent 60000 Rs. partly at 5% and the rest at 4% simple interest. If the total annual interest is 2560 Rs. the money lent at 4% was :

A man lent 60000 Rs. partly at 5% and the rest at 4% simple interest. If the total annual interest is 2560 Rs. the money lent at 4% was : [A]30000 [B]40000 [C]44000 [D]45000 Show Answer 44000 Let the amount lent at 4% be x ∴ Amount lent at 5% = (60000 – x) According

# A sum of money amounts to 850 Rs. in 3 years and to 925 Rs. in 4 years at some rate of simple interest. The sum is :

A sum of money amounts to 850 Rs. in 3 years and to 925 Rs. in 4 years at some rate of simple interest. The sum is : [A]550 Rs. [B]600 Rs. [C]625 Rs. [D]700 Rs. Show Answer 625 Rs. Interest for 1 year= (925 – 850) = 75 Rs. ∴ If a sum becomes

# 800 Rs. becomes 956 Rs. in 3 years at certain rate of simple interest. If the rate of interest is increased by 4%, what amount will 800 Rs. Become in 3 years?

800 Rs. becomes 956 Rs. in 3 years at certain rate of simple interest. If the rate of interest is increased by 4%, what amount will 800 Rs. become in 3 years? [A]1020.80 Rs. [B]1025 Rs. [C]1050 Rs. [D]1052 Rs. Show Answer 1052 Rs. SI = 956 – 800 = 156 Rs. ∴ New rate

# A sum of money at some rate of simple interest amounts to 2900 Rs. in 8 years and to 3000 Rs. In 10 years. The rate of interest per annum is :

A sum of money at some rate of simple interest amounts to 2900 Rs. in 8 years and to 3000 Rs. in 10 years. The rate of interest per annum is : [A]2% [B]2.5% [C]3% [D]4% Show Answer 2% Principal + interest for 8 years = 2900 Rs…………(I) Principal + interest for 10 years =

# The population of a village decreases at the rate of 20% per annum. If its population 2 years ago was 10000, the present population is :

The population of a village decreases at the rate of 20% per annum. If its population 2 years ago was 10000, the present population is : [A]4600 [B]6000 [C]6400 [D]7600 Show Answer 6400 Present Population Hence option [C] is correct answer.

# In how many years will a sum of 3000 Rs. yield a simple interest of 1080 Rs. at 12% per annum ?

In how many years will a sum of 3000 Rs. yield a simple interest of 1080 Rs. at 12% per annum ? [A]2 years [B]2.5 years [C]3 years [D]3.5 years Show Answer 3 years Hence option [C] is correct answer.

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