Question

A hamburger and a soda cost $1.45. Two hamburgers and one soda cost $2.50. What is the price of one soda?

$0.60
$0.40
$0.50

Answer 1

$0.40

Explanation:

let a hamburger be X and soda b y

then X + Y is equals to 1.45

2 X + Y is equals to 2.50

using elimination method we will fine the value of x

2 X + Y = 2.50

- X + Y= 1.45

X = 1.05

now how to find the value of Y

we know that X + Y = 1.45

putting the value of x

we get Y is equals to 1.45-1.05

$0.40

Answer 2

Price of one soda is B , 0.40
x+y=1.45
2x+y=2.5

Solve simultaneous equation for y
You will get 0.4