Roy is now 4 years older than Erik and half of that amount older than Iris. If in 2 years, Roy will be twice as old as Erik, then in 2 years what would be Roy's age multiplied by Iris's age?
An investment yields an interest payment of $228 each month. If the simple annual interest rate is 9%, what is the amount of the investment?
X, Y, Z, and W are integers. The expression X-Y-Z is even and the Expression Y-Z-W is odd. If X is even what must be true?
In a box there are green balls, 3A + 6 red balls and 2 yellow ones.If there are no other colors, what is the probability of taking out a green or a yellow ball?
For every X, the action [X] is defined: [X] is the greatest integer less than or equal to X. What is the value of [6.5] x [2/3] + [2] x 7.2 + [8.4] "" 6.6?
X is an even number and Y is a positive odd number. Which of the following expressions cannot be even?
