Of the 65 cars on a car lot, 45 have air conditioning, 30 have power windows, and 12 have both air conditioning and power windows. how many of the cars on the lot have neither air conditioning nor power windows?

A stock decreases in value by 20%. By what percentage must the stock price increase to reach its former value?

An author received Taka 0.80 in royalties for each of the first 100,000 copies of his book sold, and Taka 0.60...

If 8 dozens of bananas are purchased at the rate of Taka 30 per dozen and 12 dozens are purchased at Taka 25 p...

If the interest on Taka 500 for 4 years and Taka 600 for 5 years is Taka 500; what will be the rate of interes...

In a city 40% of the people have black hair, 25% have black eyes and 10% have both black hair and black eyes....

A sum of Taka 3000 invested at 4% per annum for a number of years earned Taka 300 interest. What is the time p...