SOLUTION: write an equation to model the situation. solve and check the reasonableness of your solution. two students are going to the sandwich shop for lunch. they pay $1.25 for a soda an

Question 174037: write an equation to model the situation. solve and check the reasonableness of your solution.
two students are going to the sandwich shop for lunch. they pay $1.25 for a soda and buy one whole turkey sandwich and one half turkey sandwich. the total bill is $9.50. what is the price of the whole sandwich?
Found 2 solutions by checkley77, Mathtut:
Answer by checkley77(12844) (Show Source): You can put this solution on YOUR website!
1.25+x+2x=9.50 This assumes the whole turkey sandwich is twice thw price of the half turkey sandwich.
3x=9.50-1.25
3x=8.25
x=8.25/3
x=2.75 for the half turkey sandwich.
2*2.75=5.50 for the whole turkey sandwich
Proof:
1.25+2.75+5.50=9.50
9.50=9.50
Answer by Mathtut(3670) (Show Source): You can put this solution on YOUR website!
let S represent the cost of a whole sandwich
:
1.25+S+1.5S=9.50 or (3/2)S=8.25
:

:
mult both sides by 2
:
dollars
:
this obviously assumes that a 1/2 sandwich is 1/2 the cost of a whole sandwich
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