Saturday

March 28, 2015

March 28, 2015

Posted by **Jam** on Sunday, February 20, 2011 at 4:47pm.

- algebra -
**Helper**, Sunday, February 20, 2011 at 5:23pmDistance D = Rate R * Time T

T = D/R

R = rate for car

R + 40 = rate for train

140/R = time for car

280/(R + 40) = time for train

Times are equal

280/(R + 40) = 140/R

Cross multiply and solve for R, rate for car

R + 40 = rate for train

**Answer this Question**

**Related Questions**

math - I need help to get started with writing the equation for the following ...

math - the speed of train A is 14 miles slower than train B. train A travels 210...

algebra 2 - I don't know how to do this the speed of train A is 18mph slower ...

math - Train A is 12 mph slower than train B. Train A travels 230 miles in the ...

math - Train A is 12 mph slower than train B. Train A travels 230 miles in the ...

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

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

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