SOLVE THE WORD PROBLEM USING Substitution. Upload a snapshot of your work form your notebook or piece of paper. Plumber A charges $60 an hour. Plumber B charges $40 to visit your home plus $55 for each hour. For how many hours will the total cost for each plumber be the same? How much will that cost be? IDENTIFY THE SOLUTION POINT. HINT: Remember Initial Value = Y-intercept RATE = Slope *

8 hours

$480

Step-by-step explanation:

Let us assume the hours be x

There should be two equations

For Plumber A = 60x

For Plumber B = 40 + 55x

Now in order to considered the cost to be the same we equate these two equations

60x = 40 + 55x

5x = 40

x = 8 hours

Now the total cost for plumber A is

= 480

And, the total cost for plumber B is

= 40 + 55(8)

= 480

hence, the total cost is $480

you never say the total so we cant find the percentage used for petrol

step-by-step explanation: