Question 960771: on joshs trip to his grandma house he drove 400 mile in 5 hour sat this same rate ,how many hours would it take to drive 640 miles? Found 2 solutions by Dantastic, Theo:Answer by Dantastic(1) (Show Source):
You can put this solution on YOUR website! , so 400 miles in 5 hours is the same speed as 80 miles in one hour.
Rate * Time = Distance, and the distance is 640, so we can make an equation:
, so Josh takes 8 hours to travel 640 miles.
alternatively,
r*t = d
r = rate
t = time
d = distance
with t = 4 and d = 400, you get r = 400/5 = 80 miles per hour.
at 80 miles per hour, it would take 640 / 80 = 8 hours.
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