Subject: General Aptitude · Chapter: Ratio and Proportion · Exam: · Marks: · Difficulty:
Two vessels contain spirit of 0.5 and 0.75 concentrations. If 2 litres from the first vessel and 3 litres from the second vessel are mixed, then what will be the ratio of spirit and water in the resultant solution?
(a)7 : 17
(b)17 : 15
(c)13 : 7
(d)15 : 17
Answer
Answer (as printed): C
Explanation
Quantity of spirit in the resultant solution $$\begin{aligned} & =[(0.5 \times 2)+(0.75 \times 3)] \text { litres } \\ & =(1+2.25) \text { litres }=3.25 \text { litres } . \end{aligned}$$ Quantity of water in the resultant solution $$\begin{aligned} & =[(1-0.5) \times 2+(1-0.75) \times 3] \text { litres } \\ & =(1+0.75) \text { litres }=1.75 \text { litres } . \end{aligned}$$ ∴ Required ratio $=3.25: 1.75=13: 7$.
Explanation as extracted from the printed page; notation may be imperfect.