Sum of scores of all students=50*65 =3250 Adding and removing correct value and wrong value respectively i.e 3250-83+38=3205 Correct average=3205/50 =64.1
Simple interest earned on an amount of Rs. 2000 at rate of R% per annum after 4 years is Rs. 288. Find the simple interest earned on an amount of Rs. 15...
A sum of Rs. 100 is invested at 10% per annum compound interest (compounded annually) for two years. How much interest will be received after two years?
If interest is compounded half-yearly, then find the compound interest on Rs. 8,000 at the rate of 20% per annum for 1 year.
A man invested a certain amount of sum at 12.5% per annum simple interest and earned an interest of Rs.2500 after 2 years. If the same amount is investe...
The compound interest on a certain amount, compounded semi-annually at a rate of 10% per half year for one year, is Rs. 810 less than the simple intere...
The interest earned when a sum is invested at simple interest of 12% p.a., for 3 years, is Rs. 4500. What will be the total amount received after 2 year...
A certain sum of money becomes 4000 in 6 years and Rs. 5000 in 10 years at any certain rate of simple interest. Find the principal amount.
Rohit invested Rs. 3000 in scheme 'C' for 4 years and Rs. 4500 in scheme 'D' for 3 years. If the simple interest rate for both schemes is 15% per annum,...
The difference of simple interest from two banks on Rs. 8,000 in 3 years is Rs. 800. If the rate of interest per annum in two banks is R1 and R2, then w...
The difference between compound and simple interest on a sum of money for 2 years at 25% per annum is Rs. 880. The sum is:
