How do you solve this?

asked May 16, 2019 77.0k views

3 votes

by LJP

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6 votes

C is equal to (30 x t) + 40
C = 30t + 40
we are given that C = 240
280=30t + 40
solve for t
t = 8 hrs

Aven Desta answered May 18, 2019

6.3k points

6 votes

a) C = 40 + 30t

b) 280 = 40 + 30t

30t = 240

t = 8

The plumber worked 8 hours

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