A person bought oranges costing Rs 36 from five markets. Total cost of oranges bought in the first market = Rs 36 × 5 = Rs 180 Cost of orange bought from the first market = Rs 1.00 Number of orange = 36 ÷ 1 = 36 oranges Cost of oranges bought from the second market = Rs 1.50 per orange Number of oranges = 36 ÷ 1.50 = 24 oranges Similarly, he bought 20, 18, 16 oranges from third, fourth and fifth markets respectively. Average price of oranges =