Homework Help: algebra 2

Posted by karon on Thursday, March 29, 2012 at 1:07pm.

I don't know how to do this the speed of train A is 18mph slower than the speed of train B train A travels 190 miles in the same time it takes train B to travel 280 miles find the speed of each train please help so i can pass my quiz.

algebra 2 - Reiny, Thursday, March 29, 2012 at 4:14pm
speed of train B --- x mph
speed of train A --- x - 18 mph

for A: time to go 190 miles = 190/(x-18)
for B: time to go 280 miles = 280/x

but these two times are equal, so ....
190/(x-18) = 280/x
280x - 5040 = 190x
70x = 5040
x = 72

take it from there

Answer this Question

Related Questions

algebra - the speed of train A is 8 mph slower than the speed of train B. Train ...
algebra - 1. The speed of a passenger trin is 18mph faster than the speed of a ...
algebra 1b - the speed of a passenger train is 18mph faster than the speed of a ...
Algebra - The speed of train A is 6 mph slower than the speed of train B. Train ...
algebra - The speed of train A is 6 mph slower than the speed of train B. Train ...
algebra - The speed of a passenger train is 18mph faster than the speed of a ...
algebra1 - the speed of train A is 8mph slower than the speed of train B. Train ...
Physics - A train travels 84 km/h when it reaches a slower train 47 meters ahead...
Physics - A train travels 84 km/h when it reaches a slower train 47 meters ahead...
Physics - A train travels 84 km/h when it reaches a slower train 47 meters ahead...

For Further Reading

First Name:
School Subject:
Answer: