SOLUTION: $9.50 for 3 sodas and 2 milkshakes. $10.50 for 2 sodas and 3 milkshakes. How much does each drink cost? I need help figuring out the equations. I came up with x=soda y=milksha
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Question 391206: $9.50 for 3 sodas and 2 milkshakes. $10.50 for 2 sodas and 3 milkshakes. How much does each drink cost? I need help figuring out the equations. I came up with x=soda y=milkshake
3x + 2y = 9.50 and 2x +3y = 10.50
But I can't make it work.
Thank you so much!!!!! Answer by ankor@dixie-net.com(22740) (Show Source):
You can put this solution on YOUR website! See if we can make it work
:
3x + 2y = 9.50
2x + 3y = 10.50
:
We can use elimination here. Multiply the 1st equation by 3, the 2nd equation by 2
9x + 6y = 28.50
4x + 6y = 21.00
-------------------subtracting will eliminate y, find x
5x = 7.50
x =
x = $1.50 for each soda
:
Find y using the 1st equation
3(1.50) + 2y = 9.50
4.50 + 2y = 9.50
2y = 9.50 - 4.50
2y = 5.00
y = $2.50 for each milksh
:
:
Check solutions in the 2nd equation
2(1.50) + 3(2.50) = 10.50
3 + 7.50 = 10.50
