Sivam invested some money in a scheme at the rate of 20% for 3 years. If he withdraws 40% of total amount and left remaining amount is rs.2304. What is total money which he invested at earlier.
2500
2400
3500
3200
4200
Option B Let principal = 100x SI = 100x * 20/100 * 3 = 60x Total amount = 100x + 60x = 160x remaining = 160x * 60/100 = 96x 96x = 2304 x = 24 He invested = 100x = 2400
Simple interest on rs.2750 for 2 years at certain rate of interest is rs.120 more than simple interest on rs.1500 for 3 years at same rate of interest. What is the rate of interest ?
12%
14%
15%
13%
18%
Option A Let rate of interest = R% (2750*R/100*2) – (1500*R/100*3) = 120 55 R – 45R = 120 10 R = 120 R = 12%
Simple interest on a certain sum of money at rate of 20% for 2 years is two times of the compound interest on rs.5000 for 2 years at the rate of 14% per annum. What is the sum on simple interest ?
8340
8000
12000
7490
14000
Option D Rate of compound interest after 2 years = 14 + 14 + 14 * 14/100 = 29.96% compound interest = 5000 * 29.96/100 = 1498 simple interest = 1498 * 2 = 2996 Let principal on simple interest = x 2996 = x * 20/100 * 2 x = 7490
A man invested an amount of rs.4800 for 3 years a certain rate of simple interest become rs.7248. If the rate of interest increases by 3%, what amount will rs.5000 becomes in 2 years ?
7200
6320
8450
8240
6830
Option A Simple interest = 7248 – 4800 = 2448 2448 = 4800 * 3 * 12/100 R = 17% Now rate of interest = 17 + 3 = 20% Amount = 5000 * 120/100 * 120/100 = 7200
In how many years a sum will become four times itself at the rate of 12% per annum in simple interest ?
12 years
24 years
25 years
26 years
20 years
Option C Let the principal = x Amount = 4x Simple interest = 4x – x = 3x 3x = x * 12/100 * T T = 25 years.
A deposited rs.6800 in a bank at 8% per annum for 5 years simple interest. B deposited rs.8000 at 20% per annum for 2 years in compound interest. What is difference between compound interest and simple interest.
