Question

The double number line shows that 44 4 bottles of water cost 1010 10 dollars at a music festival. 00 0 44 4 Bottles\text{Bottles} Bottles 00 0 1010 10 Dollars\text{Dollars} Dollars Based on the ratio shown in the double number line, how much does 33 3 bottles of water cost?

Answer 1

Answer: 7.5 dollar.

Explanation:

Since, here the cost of 4 bottle of waters = 10 dollars.

Therefore, the cost of 1 bottle of waters =
`(10)/(4)` =
`(5)/(2)`

Thus, the cost of 3 bottle =
`(5)/(2)* 3`

=
`(15)/(2)`

= 7.5 dollars.

So, the cost of 3 bottle is equals to $ 7.5.