Kendra owns a restaurant. She charges $1.50 for 2 eggs and one piece of toast, and $0.90 for one egg and one piece of toast. Determine how much she charges for one egg and each piece of toast

Question

I'm trying to figure out the steps to solve it using the substitution method.

Answer 1

Let E = price of one egg and T = price of one piece of toast. Therefore 1.5=2E+T and .9=E+T.Re-arrange to get E=.9-T and substitute to get 1.5=2(.9-T)-T. Solve to get T= $.3 and E=$.6

Answer 2

Here's an easier way (only because of the specific values in this problem).

2E + 1T = 1.50

1E + 1T = 0.90

Can just do a subtraction to eliminate the T's

1E = $0.60 for an egg. Then T = 0.90 - 0.60 = $0.30 for toast. As always, check answers by substituting back into the equations.