Alistair has 5 bars of chocolate of 1/2lb. She needs 1 1/2 lbs of chocolate broken in pieces to make cookies. How many cookies can she make with the chocolate she has?
Answer: 1 2/3 serving of cookies
Explanation: 5 bars of chocolate of 1/2lb = 2 1/2 lbs
For 1 serving of cookies, she needs 1 1/2 lbs of chocolate
Let's make up the proportion:
1 1/2 - 1
2 1/2 - x
1 1/2 * x = 2 1/2
x = 1 2/3 serving of cookies