What is the ratio of ~$\frac{3}{4}$~ to the product 4(~$\frac{3}{4}$~)?

The organizers of a fair projected a 25 percent increase in attendance this year over that of last year, but attendance this year actually decreased by 20 percent. What percent of the projected attendance was the actual attendance?

Three people each contributed x dollars toward the purchase of a car. They then bought the car for y dollars, an amount less than the total number of dollars contributed. If the excess amount is to be refunded to the three people in equal amounts, each person should receive a refund of how many dollars?

The annual budget of a certain college is to be shown on a circle graph. If the size of each sector of the graph is to be proportional to the amount of the budget it represents, how many degrees of the circle should be used to represent an item that is 15 percent of the budget?

If positive integers x and y are not both odd, which of the following must be even?

If r and s are positive integers such that (~$2^r$~)(~$4^s$~) = 16, then 2r + s =

If the perimeter of a rectangular garden plot is 34 feet and its area is 60 square

feet, what is the length of each of the longer sides?

A certain population of bacteria doubles every10 minutes. If the number of bacteria in the population initially was~$ 10^4$~, what was the number in the population 1 hour later?