Sudhir purchased a laptop for ₹42,000 and a scanner-cum-printer for ₹8,000. He sold the laptop for a 10% profit and the scanner-cum-printer for a 5% profit. What is his profit percentage?

$9 \frac{1}{5} \%$

We have,

Cost price of the laptop = 42000

Profit gain on laptop = 42000 × 10/100 = 4200

Cost price of the scanner – cum – printer = 8000

Profit gain on scanner – cum – printer = 8000 × (\(\frac{5}{100}\) ) = 400

Now, Total profit = 4200 + 400 = 4600

Total cost price of both articles = 42000 + 8000 = 50000

Profit percentage = (\(\frac{4600}{50000}\) ) × 100 = 9\(\frac{1}{5}\)%