• He has 3 red hats.
• He has 1 less yellow hat than red hat.
• He has 1 more blue hat than red hat.
• To find the number of green hats, add the number of yellow hats to the number of blue hats.
• The rest of his hats are orange.

Questions
How many hats are red?
How many hats are yellow?
How many hats are green?
How many hats are blue?
How many hats are orange?