Kumar spends all his monthly income of $20 on two goods, rice (x) and

cooking oil (y). The price of oil is $1 per liter. Rice can be purchased at

a government-run store and also on the free market. The price of rice

is $1 per kilogram at the government store but he can only buy up to

10 kgs. In the free market, the price of rice is $2 per kg. Draw Kumar's

budget constraint assuming that the goods are divisible.