SOLUTION: Isabel is considering a job as a waitrress. She would be paid $5 per hour plus tips. The waitstaff have told her that an average tip at that restaurant is $4.50 per table. If Isabe

Algebra ->  Customizable Word Problem Solvers  -> Misc -> SOLUTION: Isabel is considering a job as a waitrress. She would be paid $5 per hour plus tips. The waitstaff have told her that an average tip at that restaurant is $4.50 per table. If Isabe      Log On

Ad: Over 600 Algebra Word Problems at edhelper.com


    

Question 953733: Isabel is considering a job as a waitrress. She would be paid $5 per hour plus tips. The waitstaff have told her that an average tip at that restaurant is $4.50 per table. If Isabel works 25 hours per week, how many tables would she have to serve in order to make $296 for the week?
Answer by Theo(13342) About Me  (Show Source):
You can put this solution on YOUR website!


x = number of hours
y = number of tables.

general equation is 5x + 4.50y = 296.

that means 5 dollars per hour times the number of hours plus 4.50 per table times the number of tables is equal to 296 dollars.

since she worked 25 hours, then replace x with 25 and the equation becomes:

5*25 + 4.50y = 296

simplify to get:

125 + 4.50y = 296

subtract 125 from both sides of the equation to get:

4.50y = 296 - 125 which simplifies to 4.50y = 171.

divide both sides of this equation by 4.5 to get:

y = 171 / 4.5 which becomes y = 38

she would have to wait on 38 tables to make 296 dollars.

5 * 25 + 4.5 * 38 = 296

solution is confirmed.

number of tables she would have to wait on are 38 in a 5 hours period of time.