Question

7 kg of tea costing Rs. 280 per kg is mixed with 9 kg of tea costing Rs. 240 per kg. The average price per kg of the mixed tea is:

• A. Rs. 255.80
• B. Rs. 257.50
• C. Rs. 267.20
• D. Rs. 267.50

Answer 1

The correct option is B Rs. 257.50

$\Rightarrow$ Total cost of $7kg$ of tea $=Rs.280\times 7=Rs.1960$

$\Rightarrow$ Total cost of $9kg$ of tea $=Rs.240\times 9=Rs.2160$

$\Rightarrow$ Average price of mixed tea $=\frac{1960+2160}{7+9}$

$=\frac{4120}{16}$

$=Rs.257.50$