Question

the cost price of 12 candle is equal to the selling price of 15 candle find the loss per cent

Answer 1

CP of 12 candles = SP of 15 candles
Let the SP of 1 candle be Rs 1
CP of 12 candles = Rs 15
SP of 12 candles = Rs 12
Loss = 15 - 12
= Rs 3
Loss% = Loss/CP × 100
= 3/15 × 100
Loss% = 20%

Answer 2

$\huge \mathbb{ \underline{ \underline\red{ \red{S{ \pink{O{ \blue{L{ \purple{U{ \orange{T { \red{I{ \blue {O{ \green {N{ \: :-}}}}}}}}}}}}}}}}}}}$

$\: \: \:$

$\tt{Let \: SP \: of \: 1 \: candle = Rs. \: 1} \:$

$\tt{SP \: of \: 15 \: candles = Rs. \: 15} \:$

$\sf \pink{ \underline{Hence, }}$

$\tt {CP \: of \: 12 \: candles = Rs. \: 15}$

$\tt{SP \: of \: 15 \: candles = Rs. \: 12} \:$

$\sf \pink{ \underline{Therefore \: Loss}}$

$\tt = CP - SP$

$\tt = 15 - 12$

$\large \boxed { \sf { \red{= Rs. 3}}}$

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