Answer:
Kwesi needs 16 ml or 16 g of sunscreen to cover 240 cm² of his skin.
Step-by-step explanation:
It is given that Kwesi is putting on sunscreen. He uses 3 ml to cover 45 cm² of his skin.
Let Kwesi needs x ml of sunscreen to cover 240 cm² of his skin.
It is given that relationship between milliliters of sunscreen and area is proportional.
[tex]\frac{3}{45}=\frac{x}{240}[/tex]
[tex]3\times 240=45\times x[/tex]
[tex]720=45x[/tex]
Divide both sides 45.
[tex]16=x[/tex]
We know that
[tex]1\text{ ml}=1g[/tex]
Therefore Kwesi needs 16 ml or 16 g of sunscreen to cover 240 cm² of his skin.
