Problema Solution
A student takes a job in the college's student center so that she can buy books that cost $115.50. How many hours must she work to make this amount if she earns $5.50 an hour?
Answer provided by our tutors
Let 'x' represent the number of hours that the student must work.
In x hours the student will earn: 5.50x dollars.
Now we can write:
5.50x = 115.50
........
click here to see the equation solved for x
........
x = 21 hr
The student must work 21 hours to earn $115.50.