X equals to Y% of what number?(1) X = 3Y.(2) 6Y+2X = 56X/14.
How many four-digit numbers that do not contain the digits 3 or 6 are there?
The telephone company wants to add an area code composed of 2 letters to every phone number. In order to do so, the company chose a special sign language containing 124 different signs. If the company used 122 of the signs fully and two remained unused, how many additional area codes can be created if the company uses all 124 signs?
Which expression is larger 1/(5 - X) or X/5?(1) X < 8.(2) X > -8.
The average (arithmetic mean) of seven numbers is 12.2. If the sum of four of these numbers is 42.8, what is the average of the other 3 numbers?
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?
