SOLUTION: A boat travels 90 miles upstream at a rate of (v-3). It takes the boat 30 minutes longer to travel upstream than it does for the boat to travel downstream at a rate of (v+3). How l
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Question 874770: A boat travels 90 miles upstream at a rate of (v-3). It takes the boat 30 minutes longer to travel upstream than it does for the boat to travel downstream at a rate of (v+3). How long does it take the boat to travel downstream?
Answer by josgarithmetic(39800) (Show Source): You can put this solution on YOUR website!
______________speed___________time_________distance
up____________v-3_____________t+1/2________
down__________v+3_____________t____________
two unknown variables, v and t.
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