Question

Yoku is putting on sunscreen. He uses 2\text{ ml}2 ml2, start text, space, m, l, end text to cover 50\text{ cm}^250 cm

2
50, start text, space, c, m, end text, squared of his skin. He wants to know how many milliliters of sunscreen (c)(c)left parenthesis, c, right parenthesis he needs to cover 325\text{ cm}^2325 cm
2
325, start text, space, c, m, end text, squared of his skin.

Answer 1

13

Explanation:

Khan

Answer 2

Answer:
`13\ ml`

Explanation:

Let be "x" the amount of milliliters of sunscreen Yoku needs to conver
`325\ cm^2` of his skin.

In order to get the solution of this exercise it is important to analize the information given in the exercise.

You know that Yoku uses
`2\ ml` to cover an area of
`50\ cm^2` of his skin, so, with this data you can set up the following proportion:

`(50)/(2)=(325)/(x)`

Then, the final step is to solve for "x" in order to find its value. This is:

`(x)((50)/(2))=325\\\\x=(325)((2)/(50))\\\\x=13`