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
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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.

Step-by-step explanation:

Let be "x" the amount of milliliters of sunscreen Yoku needs to conver 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 to cover an area of of his skin, so, with this data you can set up the following proportion:

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