SOLUTION: 9. the bill for five glasses of apple juice and four salads is $9.50,but the bill for 4 glasses of apple juice and 5 saladas is $10.30. what would be the bill for a glass of juice

Algebra ->  Expressions-with-variables -> SOLUTION: 9. the bill for five glasses of apple juice and four salads is $9.50,but the bill for 4 glasses of apple juice and 5 saladas is $10.30. what would be the bill for a glass of juice       Log On


   



Question 130243This question is from textbook
: 9. the bill for five glasses of apple juice and four salads is $9.50,but the bill for 4 glasses of apple juice and 5 saladas is $10.30. what would be the bill for a glass of juice and a salad? HELP? This question is from textbook

Answer by scott8148(6628) About Me  (Show Source):
You can put this solution on YOUR website!
working in cents to avoid decimals

5g+4s=950 __ multiplying by 4 __ 20g+16s=3800

4g+5s=1030 __ multiplying by 5 __ 20g+25s=5150

subtracting 1st equation from 2nd __ 9s=1350 __ dividing by 9 __ s=

substitute the value of s into 5g=950-4s to find g