Thursday

January 29, 2015

January 29, 2015

Posted by **Lora** on Thursday, March 28, 2013 at 1:31pm.

opposite directions. One car travels 5 miles per hour faster than the

other car. After 4 hours, the two cars are 420 miles apart. Find the

speed of each car.

- Algebra -
**Henry**, Saturday, March 30, 2013 at 4:47pmV1 = = X- mi/h

V2 = (x+5) mi/h.

d = 4*X + 4*(X+5) = 420

4x + 4x+20 = 420

8x = 420-20 = 400

X = 50 mi/h.

X+5 = 55 mi/h.

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