MCQ

Find the ratio in which rice at ₹7.20 per kg, be mixed with rice at ₹5.70 per kg to produce a mixture worth ₹6.30 per kg.

#### Options

1 : 3

2 : 3

3 : 4

4 : 5

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#### Solution

**2 : 3Explanation:**By the rule of alligation,

\[\begin{array}{cc}

720 paise\phantom{...........}570 paise\\

\setminus \phantom{............}/ \\

\ce{\underset{630paise}{Mean Profit}}\\

/\phantom{............} \setminus \\

60paise \phantom{..............}90paise

\end{array}\]

720 paise\phantom{...........}570 paise\\

\setminus \phantom{............}/ \\

\ce{\underset{630paise}{Mean Profit}}\\

/\phantom{............} \setminus \\

60paise \phantom{..............}90paise

\end{array}\]

∴ Required ratio = 60 : 90 = 2 : 3

Concept: Ratio and Proportion (Entrance Exam)

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