Friday

March 6, 2015

March 6, 2015

Posted by **john** on Sunday, July 22, 2012 at 11:20pm.

- math -
**Reiny**, Sunday, July 22, 2012 at 11:56pmlet the speed of the boat in still water be x mph

using Distance = rate x time or Time = distance/rate

upstream:

time = 26/(x-6)

downstream:

time = 52/(x+6)

26/(x-6) = 52/(x+6)

cross-multiply

52x - 312 = 26x + 156

26x = 468

x = 18

boat's speed is 18 mph

**Answer this Question**

**Related Questions**

Math - A boat, which moves at 18 mph in still water, travels 14 miles downstream...

college math - boat travels 160 miles downstream in the same time that it takes ...

MATH - A boat on a river travels 16 miles downstream in only 2 hours. It takes ...

algebra - 36 Upstream, downstream. Junior’s boat will go 15 miles per hour in ...

Intermediate Algebra Word Problem - A river's current is 4mph. A boat travels 48...

algebra - Show a complete solution. Upstream, downstream. Junior’s boat will go ...

Math (urgent) hw due tommorow! - The speed of a stream is 3 km/h. A boat travels...

Intermediate Algebra - The speed of a boat in still water is 29mph. if the boat ...

Math - How do you set this up? Solve the system using substitution: A boat ...

algebra - A boat can travel 114 miles upstream in the same time that it can ...