Dishonest Dealer III

Algebra Level 2

The dealer now has decided to sell rice. He needs to buy the rice to sell, so he goes to a wholesale where there is a 20% reduction on the price of rice. This allows him to buy an extra 3 kg of it for the same amount- $360. Find the normal cost of rice in the wholesale market.

Note: If the answer is $10/kg, then enter 10 in the answer box.