Question

9. The cost price of 12 candles is equal to the selling price of 15 candles. Find the lo
per cent.​

Answer 1

Answer:

The loss percent is 20%

Step-by-step explanation:

It is given that cost of 12 candles is equal to the selling price of 15 candles.

$CP*12 = SP*15$

$\frac{CP}{SP} =\frac{15}{12}$

$\frac{CP}{SP} =\frac{5}{4}$

It means the ratio of CP and SP is 5:4.

Let the CP of candle be 5x ans SP of candle be 4x.

Formula for loss percent is  

$loss=\frac{CP-SP}{CP}$

$loss=\frac{5x-4x}{5x} * 100$

$loss=\frac{x}{5x} *100$

$loss=\frac{1}{5} *100$

$loss =20%$%

Therefore the loss percentage is 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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