Nico makes $8 per hour at his after school job. He also earned $20 for mowing his neighbors' lawn last week. Which equation can be used to find how many hours Nico worked if he earned a total of $140?
Mathematics · High School · Thu Feb 04 2021
Answered on
Given the statement:
Nico makes $8 per hour at his after school job. He also earned $20 for mowing his neighbors' lawn last week.
Determine the equation which can be used to find how many hours Nico worked if he earned a total of $140.
Solution:
The equation to represent the statement can be illustrated as,
8x + 20 = 140
In order to find the number of hours that Nico worked, we simply need to solve for x. To do so, we transpose first 20 to the other side of the equation, hence it must be taken to note that in transposing a number, the sign changes.
8x = 140 - 20
8x = 120
Divide both sides by 8 in order to determine the value of x.
8x/8 = 120/8
x = 15
Final answer:
Nico worked for 15 hours.