30% of 50 is what fraction of 75% of 80?

If the height of a right square pyramid is increased by 12%, by what percent must the side of the base be incr...

If a+b+c = 12, a+b = 4, and a+c = 7, what is the value of a?

What is the next term in the sequence 4, 9,6,11,8,13, …….?

A right triangle has sides in the ratio of 5:12:13. What is the measure of the smallest angle in the triangle,...

If k is an integer and k = 462/n, then which of the following could be the value of n?

If the second term in an arithmatic sequence is 4, and the tenth term is 15, what is the first term in the seq...