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: Option B

Solution(By Examveda Team)

According to the question,
Average price of mixed tea
$$\eqalign{ & {\text{ = }}\frac{{280 \times 7 + 240 \times 9}}{{16}} \cr & {\text{ = }}\frac{{1960 + 2160}}{{16}} \cr & {\text{ = }}\frac{{4120}}{{16}} \cr & {\text{ = Rs}}{\text{. 257}}{\text{.50}} \cr} $$