Answer this question:Ann can skate 6 miles an hour. Her friend Glenda can skate 8 miles an hour. If they start in the same place and skate in straight lines in opposite directions for 3 hours, how many miles apart do they end up?
First find how far Glenda goes in 3 hours by multiplying her speed by the number of hours she travels: 3 hours * 8 miles / hour = 24 miles. Then do the same thing for Ann: 3 hours * 6 miles / hour = 18 miles. Now add the number of miles both people skated to find the total distance between them: 18 miles + 24 miles = 42 miles.
The answer is 42.

Answer this question:Grant has four times as many vacations as Kelvin has classes. If Kelvin has 90 classes, how many vacations and classes do Grant and Kelvin have altogether?
Grant has 4 * 90 = 360 vacations. In total, they have 360 + 90 = 450 vacations and classes.
The answer is 450.

Answer this question:To get his fill of oysters, Crabby has to eat at least twice as many oysters as Squido does. If Squido eats 200 oysters, how many oysters do they eat altogether?
If Squido eats 200 oysters, when Crabby eats twice as many oysters as Squido does, he eats 2 * 200 = 400 oysters. Together, they eat 400 + 200 = 600 oysters.
The answer is 600.

Answer this question:Roy has 2 blue pens. He has twice as many black and 2 less than twice as many red than black pens. How many pens does Roy have in all?
Roy has 2 x 2 = 4 black pens. Twice the number of black pens is 4 x 2 = 8. So, there are 8 - 2 = 6 red pens. Therefore, Roy has 2 + 6 + 4 = 12 pens in all.
The answer is 12.