Profit selling 10 candles equals selling price of 3 bulbs. While loss on selling 10 bulbs equal selling price of 4 candles. Also profit percentage equals to the loss percentage and cost of a candle is half of the cost of a bulb. What is the ratio of selling price of candles to the selling price of a bulb?  Choose the correct choice from the following choices:
A) 5:4	B) 3:2	C) 4:5	D) 3:4	E) NONE
Solution:   Price	Candle	Bulb   SP	A(let)	C(let)   CP	B	D   and, C = 2A   Profit = 10 (B-A) = 3D   Loss = 10 (C-D) = 4B   Profit % = (3D*100)/10A   Loss % = (4B*100)/10C   Now, By the questions,   (3D*100)/10A = (4B*100)/10C   B/D = 3/2.   Answer: Option 3:2
<result>B</result>
Profit selling 10 candles equals selling price of 3 bulbs. While loss on selling 10 bulbs equal selling price of 4 candles. Also profit percentage equals to the loss percentage and cost of a candle is half of the cost of a bulb. What is the ratio of selling price of candles to the selling price of a bulb?