Two people go to the mall, Mr A said [ I buy 5 bottle of juice and 3 bottle of water , I pay 314 dollars ] . Mr B said [ I buy 1 bottle of juice and 3 bottle of water , I pay 178 dollars ]

How much is a juice ?

$34

Step-by-step explanation:

They buy the same number of bottles of water

Mr A buys 4 extra bottles of juice and pays $136 more. (5-1=4 and 314-178=136)

Each bottle of juice must cost $34. (136 / 4 = 34)

This assumes the bottles of juice are all the same price!

The water bottles will cost (178 - 34) / 3 = $48.

The values in this problem are unrealistic!

walter needs to make at least 5 more cookies but no more than 40. 5 ≤ x ≤ 40

step-by-step explanation:

20 ≤ x + 15 ≤ 55

subtract 15 from all parts

20-15 ≤ x + 15-15 ≤ 55-15

5 ≤ x ≤ 40

this means how many more cookies he has to make

walter needs to make at least 5 more cookies, but no more than 40 cookies; 5 ≤ x ≤ 40