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Ad libitum [116K]
2 years ago
10

A package of 4 mechanical pencils comes with 2 free erasers. If you get a total of 12 free erasers, how many packages of pencils

did you buy? If you get 18 free erasers,how many packages of pencils did you buy?
Mathematics
2 answers:
morpeh [17]2 years ago
7 0

Answer:

6 packs and 9 packs

Step-by-step explanation:

Elenna [48]2 years ago
6 0

Answer:

6 packs, 9 packs

Step-by-step explanation:

The ratio of mechanical pencil to free eraser is <em>2:4, or 1:2</em>.

So that means, for every free eraser you get, you bought the double amount of pencils.

12 free erasers x 2 = <em>24 pencils</em>

18 free erasers x 2 = <em>36 pencils</em>

And a pack of pencils contains 4.

24/4 = 6 packs

36/4 = 9 packs

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