Question

a merchant bought 10 kg of rice at ₹70 per kg. he sold 5 kg at ₹100 per kg and the remaining at ₹80 per kg. find his profit and the profit percent.

Answer 1

Answer:

ANSWER

His cost price = 70 × 10 = 700

His Selling price = 100 × 5 = 500 + 80 × 5 = 400

500 + 400 = 900

so

$p \: = \frac{sp}{cp} \times 100 - 100 \\ \frac{900}{700} \times 100 \\ \frac{900}{7} = 128.57 - 100 = 28.57\%$