The compound interest earned over 5 years on a certain sum of money is $1000 at an interest rate of 20% per annum. How much interest would have been earned if simple interest had been charged instead of compound interest?

If the true discount on a bill is $150 and its present worth is $1500, what will be the banker's gain?

George and Michael start a business by investing $15000 and $20000 respectively. Michael leaves the business after 5 months but does not take back his invested amount while leaving. Samuel joins the same business after 5 months by investing $10000. There is a profit of $4000 at the end of the year. What is Samuel's share in the profit?

Find the selling price of an article when the cost price is $50 and the gain is 20%?

Calculate the composite depreciation rate from the following table:

A banker's discount on $2000 at 10% is equal to a true discount on $3000. If the time and the rate are the same, calculate the time.

Calculate the median from the following table:

Adam and Brian start a business. Twice the investment made by Adam is equal to thrice the investment of Brian. Calculate Brian's share if there is a profit of $2500 in the business.

Andy takes a loan of $10000 from a bank for a period of 3 years at 10% annual rate of interest. Calculate his EMI(Equated Monthly Installment).

Calculate the compound interest compounded half yearly for 1 year on $10000 at an interest rate of 6% per annum.

Find out the missing number in the following: 9/5 : 7/4 : : 3/5 : ______