Question

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

Answer 1

2 : 3
Explanation:
By the rule of alligation,

\[\begin{array}{cc}
720 paise\phantom{...........}570 paise\\
\setminus \phantom{............}/ \\
\ce{\underset{630paise}{Mean Profit}}\\
/\phantom{............} \setminus \\
60paise \phantom{..............}90paise
\end{array}\]

∴ Required ratio = 60 : 90 = 2 : 3