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30 horses were purchased for Rs. 12000. Out of the 30 horses, the average cost of the 12 horses is Rs. 250. Find the average cost of the remaining horses.

A.	Rs. 600	B.	Rs. 500
C.	Rs. 550	D.	Rs. 650

Answer and Explanation

Answer:Rs. 500

Explanation:
The total cost of 30 horses = Rs. 12000.
The cost of the 12 horses = Average cost of 12 horses Ã— 12 =250 Ã—12= 3000.
The cost of the remaining 18 horses, = 9000 / (30 â€“ 12) = 9000 / 18 = Rs. 500

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