Kelly and Chris packed several boxes with books. If Chris packed 60 percent of the total number of boxes, what was the ratio of the number of boxes Kelly packed to the number of boxes Chris packed?
Express 17: 20 is percentage?
What % of 0.25 is 0.01 ?
A student's average test score on 4 tests is 78. What must be the student's score on the 5 ^ (th) * testf the student's average score on the 5 tests to be 80?
How many minutes does it take john to type y words if he types at the rate of x words per minute?
If n is an integer, which of the following must be even?