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Zanzabum
3 years ago
6

kwesi is putting on sunscreen. he uses 3 ml to cover 45 cm squared of his skin. he wants to know how many milliliters of sunscre

en (g) he needs to cover 240 cm squared of his skin. he assumes the relationship between milliliters of sunscreen and area is properational.
Mathematics
2 answers:
Anastasy [175]3 years ago
6 0
Kwesi needs 16 ml of sunscreen.
cluponka [151]3 years ago
3 0

Answer:

16 milliliters of sunscreen (g) he needs to cover 240 cm squared of his skin

Step-by-step explanation:

He assumed that relationship between milliliters of sunscreen and area is proportional.

V\propto S

\frac{V_1}{S_1}=\frac{V_2}{S_2}=constant

Volume of sun screen used to cover45 cm^2,V_1= 3 mL

S_1=45 cm^2

Volume of sunscreen require to cover 240 cm^2 of skin will be=V_2

S_2=240 cm^2

\frac{V_1}{S_1}=\frac{V_2}{S_2}

\frac{3 mL}{45 cm^2}=\frac{V_2}{240 cm^2}

V_2=16 mL

16 milliliters of sunscreen (g) he needs to cover 240 cm squared of his skin.

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