Homework Help: Algebra

Posted by LIbby on Monday, April 2, 2012 at 11:10pm.

Two trains start from the same place at the same time. They travel i~ opposite directions. One
averages 60 miles per hour and the other averages 80 miles per hour. After how long will they
be 420 miles apart?

Algebra - Reiny, Monday, April 2, 2012 at 11:43pm
They each travel for t hours

distance covered by first train = 60 t miles
distance covered by 2nd train = 80t miles

60t+80t = 420
140t = 420
t = 3

3 hours.

Answer this Question

Related Questions

math - Two trains depart at the same time from the same station and travel in ...
math - Two trains depart at the same time from the same station and travel in ...
algebra 2 - two buses leave housten at the same time and travel in opposite ...
algebra help - Two motorcyclists start at the same point and travel in opposite ...
Algebra 2 - I need help setting up an equation for the following word problem: ...
math - Supppose two trains leave Holbrook, Arizona, at the same time, traveling ...
Physics - Two trains travel on the same railway in opposite direction. The ...
math - 2 trains going opposite directions leave at the same time. Train b is ...
Physics - Two trains, each having a speed of 30 km/h, are headed at each other ...
Math - Two cars start from the same place and travel in the same direction. If ...

For Further Reading

First Name:
School Subject:
Answer: