mona360
mona360 mona360
  • 03-09-2018
  • Mathematics
contestada

how do you solve this?

how do you solve this class=

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TheBreeze
TheBreeze TheBreeze
  • 03-09-2018

a) C = 40 + 30t

b) 280 = 40 + 30t

30t = 240

t = 8

The plumber worked 8 hours

Answer Link
churchkeys88 churchkeys88
  • 03-09-2018
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
Answer Link

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