20% of a person's salary goes into his account as savings. He spends 10% of the remaining amount on buying clothes. If he has $720 as cash left with him, what is his salary?

$1470 is divided among Adam, Brian and Chris. The share of Adam is two-thirds of the combined share of Brian and Chris. How much money does Adam get?

A company lost 30% by selling its old furniture for $7000. How many percent would it have gained, had it sold it for $15000?

A company purchases an asset on April'05. The acquisition cost of the asset is $90000 and the expected life is 5 years. The residual value at the end of its useful life is $20000. Calculate the amount of depreciation for 2005, 2006, 2007 using the double declining balance depreciation method.

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?

The table consists of the daily sales made individually by 8 salesmen of a company for one week. Calculate the standard deviation of the sales made.

In an office comprising 200 people, 25% people are between the age of 20-25 years, 35% between the age of 25-30 years, 30% between the age of 30-35 years and 10% above the age of 35 years. Calculate the total number of people working in the office between the age of 20-30 years.

Which method of computing depreciation determines that the depreciation of an asset is more when it is new and decreases as the asset becomes old?

This question is based upon the figure shown below

Calculate the median from the following table: