SOLUTION: Greg drove at a constant speed in a rainstorm for 252 miles. He took a​ break, and the rain stopped He then drove 240 miles at a speed that was 4 miles per hour faster than

Algebra.Com
Question 1089300: Greg drove at a constant speed in a rainstorm for 252 miles. He took a​ break, and the rain stopped He then drove 240 miles at a speed that was 4 miles per hour faster than his previous speed. If he drove for 13 ​hours, find the​ car's speed for each part of the trip.
Found 2 solutions by josgarithmetic, ikleyn:
Answer by josgarithmetic(39617)   (Show Source): You can put this solution on YOUR website!
               SPEED        TIME         DISTANCE
RAIN            r           252/r         252
NO RAIN         r+4         240/(r+4)     240
Total                        13


-

.
.


discriminant,


Answer by ikleyn(52781)   (Show Source): You can put this solution on YOUR website!
.
 = 13.

Solve for x, which is the lowest speed, in miles per hour.


Answer.  x = 36 mph.


RELATED QUESTIONS

Greg drove at a constant speed in a rainstorm for 252 miles. He took a​ break, and (answered by josgarithmetic)
Greg drove at a constant speed in a rainstorm for 273 miles. He took a​ break,... (answered by josmiceli)
greg drove at a constant speed in a rainstorm for 252 miles. he took a break, and the... (answered by josgarithmetic,josmiceli)
Greg drove at a constant speed in a rainstorm for 288288 miles. He took a​ break,... (answered by ikleyn)
Greg drove at a constant speed in a rainstorm for 282 miles. He took a​ break, and (answered by jorel1380)
Greg drove at a constant speed in a rainstorm for 258 miles. He took a​ break, and (answered by htmentor,greenestamps,josmiceli)
Greg drove at a constant speed in a rainstorm for 288 miles. He took a​ break, and (answered by ikleyn)
Greg drove at a constant speed in a rainstorm for 240240 miles. He took a​... (answered by addingup)
Greg drove at a constant speed in a rainstorm for 280 miles. He took a break, and the... (answered by richwmiller)