A mechanic charges $50 an hour plus parts. If a bill was $450 that included $150 in parts, how many hours did the job takes?
2007-03-08 10:55:55 · 6 answers · asked by bop 1 in Science & Mathematics ➔ Mathematics
Let h = the number of hours, and write an equation. We know it will cost $50 an hour (50h) plus the cost of parts (150). We know the sum will be $450:
50h + 150 = 450
50h = 300 (subtract 150 from both sides)
h = 6 (divide both sides by 50)
Remember to check your work!
2007-03-08 11:03:04 · answer #1 · answered by yanksfan 2 · 0⤊ 0⤋
First you subtract the $150 for parts from the total bill, because the money for parts doesn't affect the labor costs. That leaves you with $300, which when divided by $50 per hour gives you 6 hours.
2007-03-08 11:05:14 · answer #2 · answered by Sarah 3 · 0⤊ 0⤋
6 hours
2007-03-08 11:03:49 · answer #3 · answered by Octavius 2 · 0⤊ 0⤋
50h + 150 = 450
50h = 300
h = 6
2007-03-08 10:59:02 · answer #4 · answered by richardwptljc 6 · 0⤊ 0⤋
50x+150=450
50x=300
x=6
2007-03-08 10:58:42 · answer #5 · answered by leo 6 · 0⤊ 0⤋
6 hours which was way to long.
2007-03-08 11:05:57 · answer #6 · answered by Anonymous · 0⤊ 0⤋