Evan is building a fort for his pet Bearded Dragon. He uses a total of 300 pieces of tile to build the fort. The ratio of blue tiles to red tiles is 1:2. How
many blue tiles did Evan use to build the fort?*

100

Step-by-step explanation:

blue = 1

red = 2

(blue) 100

(red) 200

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: