An electritioncharges a $40 dollar fee to make a house call plus an hourly rate for labor. If the totalbill for a job that takes 2 hours comes to $99, what is the electrician's hourly labor rate

the electrician's hourly labor rate is $25

Step-by-step explanation:

Let x represent the electrician's hourly labor rate.

The electrician charges a $40 dollar fee to make a house call plus an hourly rate for labor. This means that the total bill for a job that takes y hours would be

xy + 40

If the total bill for a job that takes 2 hours comes to $99, it means that

2x + 40 = 90

2x = 90 - 40

2x = 50

x = 50/2

x = 25

the simplified form is

step-by-step explanation:

we want to simplify the expression,

let us change the middle bar to a normal division sign to obtain,

we multiply the first fraction by the reciprocal of the second fraction to obtain,

we factor to obtain,

we cancel the common factors to get,

we simplify to get,

the correct answer is b

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