Roshan bought 5 pants at ₹25 each, 10 shirts at ₹ 50 each and 15 ties at ₹ 35 each. Find the average price of all the articles.

Here, n₁ = 5, n₂ = 10, n₃ = 15, a₁ = 25, a₂ = 50, a₃ = 35
According to the formula,
Average price = (n₁a₁ + n₂a₂ + n₃a₃) / (n₁ + n₂ + n₃)
= (5 x 25 + 10 x 50 + 15 x 35) / (5 + 10 + 15)
= (25 + 100 + 105) / (1 + 2 + 3)
= 230/6
= ₹ 38.33