John buys 20 kg of wheat at Rs.30 per kg and 30 kg of wheat at Rs.50 per kg. Find his average price.
Show answer & explanation
Correct answer: C
Explanation
The correct answer is Option 3 i.e. Rs.42 per kg.
Total cost = (20 × 30) + (30 × 50) = 600 + 1500 = 2100
Total quantity = 20 + 30 = 50 kg
Average price = 2100 ÷ 50 = Rs.42 per kg