Thursday

July 24, 2014

July 24, 2014

Posted by **Chelsea** on Tuesday, December 13, 2011 at 4:50pm.

- Algebra -
**Reiny**, Tuesday, December 13, 2011 at 5:42pmspeed of freight --- x mph

speed of passenger --- x+6 mph

time to go 230 by freight = 230/x

time to go 260 by pass = 260/(x+6)

but they are equal, so

230/x = 260/(x+6)

260x = 230x + 1380

30x = 1380

x = 46

speed of freight is 46 mph , and the passenger train is 52 mph

check: 230/52 = 1/5 hrs

230/46 = 1/5 hr

all is good

**Related Questions**

algebra 1b - the speed of a passenger train is 18mph faster than the speed of a ...

MATH Algebra - The speed of a passenger train is 6 mph faster than the speed of ...

Algebra - The speed of a passenger train is 20 mph faster than the speed of a ...

Math - The The speed of a passenger train is 12 mph faster then the speed of a ...

algebra - the speed of a passenger train is 20mph faster than the speed of a ...

algebra - The speed of a passenger train is 18mph faster than the speed of a ...

algebra - 1. The speed of a passenger trin is 18mph faster than the speed of a ...

algebra - The speed of a passenger train is 16 mph faster than the speed of a ...

algebra - a passenger train's speed is 60mi/h, and a freight train's speed is ...

algebra - A passenger train's speed is 60 mi/h, and a freight train's speed is ...