Of two groups of tourists, each has 60 people. If three fourth (i.e. 75%) of the first group and two-third of the second group board buses to travel to a museum, how many more people of the first group board buses than of the second group?

If an integer y is subtracted from an integer x, and the result is greater than x, then y must be ---

A circular wheel 28 inches in diameter rotates (moves) the same number of inches per second as a circular whee...

A two-digit number has 3 in its unit digit. The sum of its digits is one-seventh of the number itself. What is...

The total cost of a bouquet of roses at a flower shop depends on the number of roses ordered. The vase costs $...

If there are 300 calories in 100 grams of a food, how many calories are there in a 30-gram portion of that foo...

Equal amounts of water were poured into two empty jars of different capacities, which made one jar 1/4 full an...