SOLUTION: A motorboat goes 15 miles downstream at its top speed and then turns around and returns 15 miles upstream at its top speed. The trip upstream took twice as long as the trip downstr
Algebra.Com
Question 1074159: A motorboat goes 15 miles downstream at its top speed and then turns around and returns 15 miles upstream at its top speed. The trip upstream took twice as long as the trip downstream. If the boats' top speed is 10 mph in still water, how fast is the current?
D=Rt rule is confused again.
Please help me with this.
Thank you.
Answer by jorel1380(3719) (Show Source): You can put this solution on YOUR website!
Let c be the speed of the current. Then
15/10-c=2(15/10+c)
15/10-c=30/10+c
300-30c=150+15c
45c=150
c=3.3333 mph as the speed of the current. ☺☺☺☺
RELATED QUESTIONS
A motorboat can travel 15 miles per hour downstream and 9 miles per hour upstream on a... (answered by Alan3354)
A motorboat can travel 15 miles per hour downstream and 9 moles per hour upstream on a... (answered by Boreal)
A motorboat heads upstream a distance of 24 miles on a river whose current is running at... (answered by ankor@dixie-net.com)
In his motorboat, Bill travels upstream at top speed to his favorite fishing spot, a... (answered by mananth)
In his​ motorboat, Tran travels upstream at top speed to his favorite fishing​ spot,... (answered by ikleyn,greenestamps)
A boat travels upstream for 35 miles and then returns to its starting point. If the round (answered by josgarithmetic)
A river flows with a uniform velocity vr. A person in a motorboat travels 1.12 km... (answered by josmiceli)
a cruise boat travels 24 miles downstream in 3 hours and returns to its starting point... (answered by stanbon,checkley71)
A cruise boat travels 60 miles downstream in 3 hours and returns to its starting point... (answered by orca)