posted by Tracy on .
It takes Andy and Ben the same amount of time to eat 1 large piece of chocolate. It takes Charlotte 3 more mins than Andy and Ben to eat the same piece of chocolate. One day, Andy, Charlotte and Ben share 2 pieces of chocolate among them. It takes them 5 mins to eat 2 pieces of chocolate together. Let x represent the time it takes Andy and Ben to eat 1 large piece of chocolate. How long does it take each of them to eat 1 large piece of chocolate?