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3 years ago

15

Dg's plumbing and heating charges $50 plus $70 per hour for emergency service. bill remembers being billed just over $450 for an

emergency call. how long to the nearest hour was the plumber at bill's house?

1 answer:

valkas [14]3 years ago

6 0

50 + 70h = 450
70h = 450 - 50
70h = 400
h = 400/70
h = 5.71.....to the nearest hr, it would be 6 hrs <=

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