3/5 of a number is 21.
find the number.

At school there are 526 students and 263 are girls about how likely is it that a randomly chosen student will be a boy

Is the product of two rational numbers irrational or rational? first, make a hypothesis by multiplying two rational numbers. then, use variables such as x=a/b and y=c/d and the closure property of integers to prove your hypothesis.

At 6 1/2 cents per pound of string beans how much does 7 pounds cost