Question

Sarah works 18 hours a week at a restaurant and earns $8.25 per hour. She also earns tips, which are 15% of the food she delivers to customers. One week, she earns $263.25. Write an equation that can be used to find the total cost, c, of the food Sarah delivered to customers that week.

Answer 1

for 18 hours of work she earns 18*8.25=$148.5

tip = 18% of the food

One week, she earns $263.25.

total cost, c, of the food that Sarah delivered to customers that week.

x= the amount of food

c= 148.5+1.18x=263.25

1.18x=263.25-148.5

c = 97.2457..=$97.25