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27 votes
27 votes
Karl drove for 4 hours. For part of the trip he drove at 50 miles per hour. For the rest of the trip he drove at 100 miles per hour.

All together he drove 250 miles.

Solve this equation for h to find out how many hours he drove at 50 miles per hour.

250 = 50h + 100(4 - h)

User Amir Astaneh
by
3.1k points

1 Answer

24 votes
24 votes

Answer:

3 hours

Explanation:

250 = 50h + 100(4 - h)

250 = 50h + 400 - 100h

250 = -50h + 400

-150 = -50h

h = 3

User Arpit Solanki
by
3.3k points