Of the 50 parking spots in the garage, 23 are empty. What is the ratio of the number of empty parking spots to the number of full parking spots?

Find the number of full ones by subtracting empty from total:

50 - 23 = 27 full

The ratio of empty to full is written as empty: full

Ratio = 23:27

mr. flanders’ class sold 47 doughnuts and   mr. rodriquez’s class sold 38 cartons of milk

step-by-step explanation:

let x be the number of doughnuts sold by mr. flanders’ class and y be the number of cartons sold by mr. rodriquez’s class.

1. together, the classes sold 85 items, then

x+y=85.

2. both classes earn earned $104.49 for their school. if doughnuts were sold for $1.35 each, then x doughnuts costed $1.35x. if cartons of milk were sold for $1.08 each, then y cartons costed $1.08y. hence,

1.35x+1.08y=104.49.

3. solve the system of two equations: