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The amount of water (in ml) that should be added to reduce9 ml lotion, containing 50% alcohol,to a lotion containing 30% alcohol, is:

Option 1)
5 ml
Option 2)
2 ml
Option 3)
3 ml
Option 4)
6 ml
Option 5)
4 ml

Answers (1)

best_answer

9 ml solution = 50 % alcohol = 4.5 ml

Let $x\: ml$ added $(4.5 + x) =$ water and alcohol $\frac{4.5}{9}+x = \frac{30 }{100}$

$45 = 27+3x$

X= 6ml

Posted by

rishi.raj

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