Question

the cost price of 12 candles is equal to the selling price of 15 candles​

Answer 1

Answer:

CP of 12 candles = x

CP of 1 candle = x/12

SP of 15 candles = x

SP of 1 candle = x/15

loss = CP - SP

= x/12 - x/15

=( 5x - 4x )/60

= x/60

loss % = (100x )/60(x/12)

= 20%

Answer 2

Answer:

Rs.3

Step-by-step explanation:

Let the CP of each candle = Rs.1

CP of 12 candles = SP of 15 candles

                           = Rs.15

Let the SP of each candle = Rs.1

SP of 15 candles = CP of 12 candles

                          = Rs.12

Loss = CP - SP

       = 15 - 12 = Rs.3