SOLUTION: Tom brought 2 slices of pizza and 3 chicken sandwiches for $7. Sarah bought 3 slices of pizza and 4 chicken sandwiches for $10. How much does each chicken sandwich and slice of pi

Algebra ->  Coordinate Systems and Linear Equations  -> Linear Equations and Systems Word Problems -> SOLUTION: Tom brought 2 slices of pizza and 3 chicken sandwiches for $7. Sarah bought 3 slices of pizza and 4 chicken sandwiches for $10. How much does each chicken sandwich and slice of pi      Log On


   

Question 1135632: Tom brought 2 slices of pizza and 3 chicken sandwiches for $7. Sarah bought 3 slices of pizza and 4 chicken sandwiches for $10. How much does each chicken sandwich and slice of pizza cost
Answer by josgarithmetic(39620) About Me  (Show Source):
You can put this solution on YOUR website!
system%282p%2B3c=7%2C3p%2B4c=10%29


3*E1 and 2*E2, and then subtract. Use this to find c.


From same system, 4*E1 and 3*E2, and then subtract. Use this to find p.



Also notice, that in your initial system, E2-E1 will give you p%2Bc=3, which you might want to use instead of either of the initial equations of the system.