ABC26GN2468 · Percentage
Subject: General Aptitude · Chapter: Percentage · Exam: 2005 · Marks: · Difficulty:
6 c.c. of a 20\% solution of alcohol in water is mixed with 4 c.c. of a 60\% solution of alcohol in water. The alcoholic strength of the mixture is
(a)20\%
(b)26\%
(c)36\%
(d)40\%
Answer
Explanation
Quantity of alcohol in 10 c.c. solution $$\begin{aligned} & =\left(20 \% \text { of } 6+60 \% \text { of 4) c.c. }=\left(\frac{20}{100} \times 6+\frac{60}{100} \times 4\right)\right. \text { c.c. } \\ & =(1.2+2.4) \text { c.c. }=3.6 \text { c.c. } \\ & \therefore \text { Required strength }=\left(\frac{3.6}{10} \times 100\right) \%=36 \% \end{aligned}$$
Explanation as extracted from the printed page; notation may be imperfect.
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