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 : [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]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]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 : [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]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]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? [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]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 : [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 ? [A]2 years [B]2.5 years [C]3 years [D]3.5 years Show Answer 3 years Hence option [C] is correct answer.