Question

please answer the questions

Answer 1

» Given Ratio of black and white paint "5:15"

=> Required mixture = 3.5 L

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Now

» Quantity of Black paint = X

$= > x = \frac{5}{5 + 15} \times 3.5 \\ \\ = > x = \frac{5}{20} \times 3.5 \\ \\ = > x = \frac{3.5}{4} \: l$

then

=> % of Black paint = (X×100)/total mixture

$= > \% \: OF \: BLACK \: PAINT = \frac{ \frac{3.5}{4} \times 100 }{3.5} \\ \\ = > \% \: OF \: BLACK \: PAINT = 25\%$
____________________[ANSWER]

NOW

» Quantity of white paint = (15×3.5)/20

» Quantity of white paint = (3×3.5)/4

» Quantity of white paint = 10.5/4 L

»=Quantity of white paint = 2.65 L
-__________________[ANSWER]

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_-_-_-_✌☆$BE \: \: \: \: BRAINLY$☆✌_-_-_-_

Answer 2

Heya!!
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♦Given that ,
============


✔Ratio of Black and White paint => 5:15


=> Volume of Mixture Required => 3.5 L


Now ,
=====

% Of Black Paint =>>


♦Let the Percentage of Black Paint be X



=> X = 5/20 × 3.5

=> X = 3.5/4
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◾% Of Black Paint = X / Total Amount × 100



=>> 3.5/4 × 100 / 3.5


=>> 100/4 = 25%

.

⭐Hence the Percentage of Black Paint is 25%



〰now, the amount of white paint required =>>

=> 15 × 3.5/20

=> 2.65 L


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