The cost of burgers varies directly with the number
of burgers purchased. If 30 burgers cost $45.00, what is the price of 20 burgers?
Write an equation to represent the situation.
What would 20 burgers cost?

The cost of 20 burgers is $30.

Step-by-step explanation:

It is given that, the cost of burgers varies directly with the number  of burgers.

This means that, according to the number of burgers purchased, the cost of the burger has been changed.

The cost of the 30 burgers = $45

Let us assume, the cost of the 20 burgers = x

In order to find the value of x, use rate formula :

Rate = Total cost of the burgers / No.of burgers.

⇒ 45/30

Similarly, the cost is x for 20 burgers

⇒ x/20

Comparing the two rates,

⇒ 45/30 = x/20

⇒ x = (45×20) / 30

⇒ x = 900 / 30

⇒ x = 30

Therefore, the cost of 20 burgers is $30.

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this would make it the y intercept.