Business math question

Question

Bill's Roast Beef sells 5 times as many sandwiches as Pete's Deli. The difference between their sales is 308 sandwiches. How many sandwiches did each sell?

Pete's sold	sandwiches
Bill's sold	sandwiches

Answer 1

Pete's sales are x.

Bill's sales are y.

Algebra:

x-5/x=308 given in problem

x-.2x =308 substitute value of y for x

.8x/.8 =308/.8 divide both sides by .8

x=308/.8 or 375 division

Pete's sales are 385;

Bill's sales are one fifth of that: 77

check 385-77-308 given in problem

385/5= 77 given in problem