Percentage Mcqs


Q.  The amount of water (in ml) that should be added to reduce 9 ml. Lotion, containing 50% alcohol, to a lotion containing 30% alcohol, is__________?

a. 3
b. 4
c. 5
d. 6


ANSWER: See Answer
 
4.5 4.5
30% 70%
30% —– 4.5
70% ——? => 10.5 – 4.5 = 6 ml
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