A university bookstore recently sold a wirebound graph-paper notebook for $2.50, and a college-ruled notebook for[..]

A man invests $8000 . For part he receives 5% interest and for the rest 3%. His total income from the two[..]

Three pipes, A,B, and C, are often used two at a time to fill a tank. When A and B are used together, the tank is[..]

a man has two children, a boy and a girl. The boy is 6 years older than the girl. Two years ago the father's age[..]

There are three numbers whose sum is 45. The ratio of the sum of the first two numbers to the third number is 8/7.[..]

If 2 is added to the numerator and to the denominator of a fraction, the value becomes 0.9. If 3 is subtracted from[..]

Two men working together can do a job in 20 days. After both have been working 10 days, one quits. The other man[..]

A dairy operator has some milk of 2.5% butterfat, and some milk of 4% butterfat. How many gallons of each kind must[..]

A pilot flew from an airport to another against a headwind of 20 miles per hour. The flight took 2 hours. He[..]

A roast turkey is taken from an oven when its temperature has reached 185°F and is placed on a table in a room where[..]