Answer :
Answer:
20 cookies left
Step-by-step explanation:
Henry had 30 cookies but ate 1/3 of them as they came out.
He now has (30 * 1/3 = 30/3 = 10) 30-10 = 20 cookies left
He makes 20 more cookies.
He now has 20 + 20 = 40 cookies.
He sold half of them. He now has (40* 1/2 = 40/2 = 20) 40 - 20 = 20 cookies left.