Question

A shopkeeper purchases 350 lamps for Rs.200 each. He sells 210 lamps at Rs. 310 each and

The remaining lamps at Rs.150 each. Find his total profit or loss percentage​

Answer 1

Answer:

$23 \: \%$

Step-by-step explanation:

Cost of 350 lamps = 350 × 200

= Rs. 70,000

SP of 210 lamps = 210 × 310

= Rs. 65,100

Remaining lamps = 350 - 210

= 140

SP of 140 lamps = 140 × 150

= Rs. 21,000

Total SP = 65,100 + 21,000

= Rs. 86,100

CP = 70,000 < 86,100 = SP

Profit = 86,100 - 70,000

= Rs. 16,100

$Profit \: \%= \frac{P}{CP} \times 100 \\ = \frac{16100}{70000} \times 100 = 23\:\%$

Answer 2

$solution :$

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$cost \: of \: 350 \: lamp = 350 \times 200$

$= \: rs.70000$

$sp \: of \: 21 \: lamps \: = 210 \times 310$

$= 65100$

$remaining \: lamps \: = 350 - 210$

$= 140$

$sp \: of \: 140 \: \: lamps \: = 140 \times 150$

$= rs.24000$

$total \: sp = 65100 + 21000$

$= 86100$

$cp = 70000 < 86100 = \: sp \: profit$

$profit \: = 86100 - 70000$

$rs.16100$

$profit \: percent \: = \frac{p}{cp} \times 100$

$\frac{16100}{70000 \: } \: \times 100$

$= 23\%$

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