Answer:
Soda cost $5
Hamburger cost $15
Step-by-step explanation:
Let the price of soda be A and that of hamburger be B
From the question,a soda and hamburger cost $20 at a restaurant.
That’s
A + B = $20
Also,the hamburger costs $10 more than the soda
That’s
B = A + $10
We now have two equations
Equation 1 : A + B = 20
Equation 2: B = A + 10
Now substitute A + 10 for B in equation 1.
We have
A + A + 10= 20
2A + 10 = 20
Subtract 10 from both sides
2A + 10 - 10 = 20 - 10
2A = 10
Divide both sides by 2
A = 10/2
A = 5
A soda cost $5
Now substitute 5 For A in equation 2 to get B
B = 10 + A
B = 10 + 5
B = 15
B = $15
A soda cost $5 while the hamburger cost $15
