“What are we gonna’ do?” whined David.

“We certainly have a lot of problems. The worst being that we don’t even know how to drive this crazy elevator,” noted Serena.

“And we’re at least two thousand miles away from home by my calculations,” added David.

“Our parents are probably like totally worried about us,” said Hannah.

“And I’m hungry,” complained Justin. “Luckily I have this pocket-size cookbook with me.”

Justin opened up the little cookbook and read for a minute, “It says I need 3 eggs, 1/2 cup of sugar, 1 cup of flour, and 1 cup of milk to make 10 cookies. I guell I’ll make 40 cookies so everyone can have eight.”

**How many eggs does Justin need to make 40 cookies?**