Question

Zahra needed to get her computer fixed. She took it to the repair store. The technician at the store worked on the computer for 4.75 hours and charged her $66 for parts. The total was $184.75. Write and solve an equation which can be used to determine xx, the cost of the labor per hour.

Answer 1

Answer: x = 25

Based on the given conditions, formulate:
66

+
4.75

×
x

=
184.75

Rearrange unknown terms to the left side of the equation:
4.75
x

=
184.75

−
66

Calculate the sum or difference:
4.75
x

=
118.75

Divide both sides of the equation by the coefficient of variable:
x

=
118.75
4.75

Convert decimal to fraction:
x

=
11875
100
475
100

Divide a fraction by multiplying its reciprocal:
x

=
11875
100

×
100
475

Write as a single fraction:
x

=
11875
×
100
100
×
475

Cross out the common factor:
x

=
11875
475

Cross out the common factor:
x

=
25

get the result:
x

=
25

Answer:
x

Answer 2

Answer:

25

Step-by-step explanation:

1st Step, Find how much she paid for 4.75 hours

184.75 - 66 = 118.75

2nd Step, find how much she did in 1 hour

118.75/4.75 = 25

25 dollars per hour