The average price of three items of furniture is Rs. 12000. If their prices are in the ratio 3:5:7, the price of the cheapest item is?
Choose the correct choice:
A) 2379  B) 2889  C) 9288  D) 7200  E) 28311
Let their prices be 3x, 5x and 7x.   Then, 3x + 5x + 7x = (12000 * 3) or x = 2400.   Cost of cheapest item = 3x = Rs. 7200.   Answer: 7200
<result>D</result>
The average price of three items of furniture is Rs. 12000. If their prices are in the ratio 3:5:7, the price of the cheapest item is?