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 ืหโ Y ืหโ Z is even and the expression Y ืหโ Z ืหโ W is odd. If X is even what must be true?
If X is a positive integer and (405)is a multiple of 3, what is the largest possible value of X?X -
How many four-digit numbers that do not contain the digits 3 or 6 are there?
It takes Tanya 50 minutes to drive to the country club. If the average speed of the entire round trip to the club is 87.5% of the average speed on the way to the club, how many minutes approximately will it take Tanya to drive home from the country club?
