SOLUTION: From a point on a river, two boats are driven in opposite directions, one at 8 mph and the other at 11mph. In how many hours will they be 57 miles apart?
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Question 403749: From a point on a river, two boats are driven in opposite directions, one at 8 mph and the other at 11mph. In how many hours will they be 57 miles apart? Found 2 solutions by septimus98, MathTherapy:Answer by septimus98(1) (Show Source):
You can put this solution on YOUR website! This is a really simple problem to solve. What you need to do is divide 8 by 57 and 11 by 57. Add the numbers you get together and you have your answer.
You can put this solution on YOUR website! From a point on a river, two boats are driven in opposite directions, one at 8 mph and the other at 11mph. In how many hours will they be 57 miles apart?
= Time
Distance = 57 miles. In this case, we can easily add the speeds to get a total speed of 19 (8 + 11) mph
We therefore have: = hours
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We also could have solved by adding the distances traveled by both vehicles and solving
In other words, Distance traveled by slower vehicle + distance taveled by faster vehicle = 57 miles
Let the time it takes the vehicles to cover their respective distances be T
Distance traveled by slower vehicle = 8T
Distance taveled by faster vehicle = 11T
As mentioned before, distance traveled by slower vehicle + distance taveled by faster vehicle = 57 miles
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