One quantity of wheat at Rs 9.30 per Kg is mixed with another quality at a certain rate in the ratio 8 : 7. If the mixture so formed be worth Rs 10 per Kg, what is the rate per Kg of the second quality of wheat?

A. Rs. 12.47 B. Rs. 10.80 C. Rs. 15.17 D. Rs. 47.66 Answer: Option B
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Solution(By Apex Team)

Let the rate of second quality be x Rs. per kg Ratio $=8: 7$ $(9.30)(8)+(8)(7)=$ Total rate of the mixture of 2nd quality wheat Total no. of kg’s $=7+8=15$ $\begin{aligned} &\frac{(9.30)(8)+7 \mathrm{x}}{15}=10 \\ &7 \mathrm{x}=75.6\end{aligned}$ Therefore, rate of second quality of wheat. $\mathrm{x}=10.8$

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