At Yummy Restaurant, each muffin cost 2/5 as much as each hamburger. Rita paid $45.50 for 15 muffin and 7 hamburgers.
(a) Find the cost of each muffin.
(b) Find the cost of each hamburger.
m = .4h
15m + 7h = $45.50
Substitute .4h for m in second equation and solve for h. Insert that value into the first equation and solve for m. Check by inserting both values into the second equation.