The sum of two numbers is 24. the difference is 16. what are the two numbers?

20 and 4

20 - 4 = 16

20 + 4 = 24

You can find this out by doing something like this:

24 + 0

23 + 1

22 + 2

21 + 3

20 + 4                   20 - 4 = 16

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: