Profit and loss

Quantitative Aptitude ( CCS)

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Profit on selling 10 candles equals selling price of 3 bulbs. While loss on selling 10 bulbs equals 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 candle to the selling price of a bulb?

2:1

3:2

7:9

5:3

Explanation:

Candle —————— Bulb
CP ….x ——————– y
SP…..a———————b
and y = 2x
Profit = 10(a – x) = 3b
Loss = 10(y – b) = 4a
Profit% = (3b/10x)*100———–(1)
and Loss% = (4a/10y)*100———-(2)
Again,
equating (1) & (2), we get
a/b = 3/2

Hence, option 2 is the correct answer.

By: Amit Kumar

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