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supatsarah
Charlie and Chang start at the same point and drive in opposite directions. Charlie drives 75 mph and Chang drives 51 mph. How far apart will they be in 3 hours?
the speed is given for both people and so is the time. you just have to find the distance. and distance/time = speed :)
@joshi that's what i need help with.
ok well it would help if you drew a diagram. |dw:1349552039690:dw|
so the O is the Origin and you call it 0 as well. we need to find 2 things for the solution. Chang's distance and Charlie's distance. so in math to make things easier we'll just call it a letter. so we can say charlie's distance= x miles and Chang's distance = y miles (or any other letter)