In a plane mirror, image is formed behind the mirror at the same distance as the object is in front of it. Therefore, if the distance between an object and its image is 2m then object must be 1m ahead of the mirror. The girl should therefore walk 5 – 1 = 4 towards the mirror.
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:
