Question

Krys bought x boxes of pastries to bring to a party. Each box contains 12 pastries. She decides to keep two boxes for herself. She brings 60 pastries to the party. Which equation can be used to find the number of boxes, x, Krys bought? a. 2x − 12 = 60 b. 12x − 2 = 60 c. 12x − 24 = 60 d. 24 − 12x = 60

Answer 1

c. 12x − 24 = 60

Explanation:

x is the number of boxes Krys bought.

12x is the number of pastries in those boxes. 2·12 = 24 is the number of pastries in the boxes Krys kept for herself. Then the number of pastries Krys brought to the party is ....

... 12x -24

We are told that number is 60, so we can use this equation to find x:

... 12x -24 = 60

Answer 2

Option C : 12x − 24 =60

Explanation:

Given :

Krys bought x boxes of pastries to bring to a party.

Each box contains 12 pastries.

She decides to keep two boxes for herself.

She brings 60 pastries to the party.

To Find : Equation can be used to find the number of boxes, x, Krys bought.

Solution :

Krys bought x boxes of pastries .

Each box contains 12 pastries.

So, total pastries she bought = 12 x

She decides to keep two boxes for herself.

Since 1 box contain 12 pastries .

Thus two box contains pastries = 12*2 =24 pastries

Now total pastries she bought is 12 x . Out of which she decides to keep 24 pastries . after keeping 24 pastries from 12 x pastries she bought 60 pastries to the party i.e.

⇒ 12 x - 24 = 60

Thus,Equation can be used to find the number of boxes, x, Krys bought:

12 x - 24 = 60

Hence Option C is correct .