Question

A caterer makes 3 extra sandwhiches for every 20 sandwhiches a customer orders. What is the ratio of ordered sandwiches to extra sandwiches? The caterer makes a total of 184 sandwiches for a customer. How many sandwhiches did the customer order?

Answer 1

you can solve this by making a proportion.

$\frac{3}{20} = \frac{x}{184}$

you cross multiply and divide to solve this. your answer is 8.