Question

miss clark bought 3 cups of yogurt and 5 oranges for
$2.79 then she bought 4 yogurts and 7 oranges for $3.81. find the cost of one yogurt and the cost of one orange

Answer 1

3y + 5o = 2.79
4y + 7o = 3.81

I'll use elimination:

12y + 20o = 11.16
12y + 21o = 11.43

-o = -.27 or o = 0.27

3y + 5(.27) = 2.79

3y + 1.35 = 2.79

3y = 1.44

y = 0.48

(0.27, 0.48)

Check to see if that solution works.

Answer 2

thanks

Answer 3

You're welcome.