Question

You can buy 4 bottles of water from a vending machine for $7. At this rate, how many bottles of water can you buy for $28

Answer 1

16

Explanation:

Divide 7 by 4, which gives you 1.75 . Multiply 1.75 & 28 and you get 16.

Answer 2

16 bottles

Explanation:

We can write a ratio, dollars over bottles of water

7 28

-------- = ----------

4 x

Using cross products

7x = 4*28

Divide each side by 7

7x/7 = 4*28/7

x = 4 * 4

x = 16