The Chemistry Cafe was out of bread. The cook went next door to the bakery and bought a loaf of bread which has 33 slices. Then, she sells 12 sandwiches (two pieces of bread per sandwich). How much bread did she have left? Explain your answer.
2 answers:
In the question, we are told that there are;
A loaf containing 33 slices A loaf containing 33 slices A package of cheese containing 15 slices We also know that he is making a sandwich that has 2 pieces of both cheese and bread.
Hence;
Total number of bread and cheese = 33 + 15.
Each loaf should have two pieces of each bread and the cheeses make a total of four pieces.
Therefore he can make = 33 + 15/4 = 12 sandwiches.
The cook uses 2 slices of bread per sandwich. Which is equivalent to (the slices of bread) x (the total number of sandwiches) = total number of bread slices used. In this case 2 x 12 =24 slices used. Since the loaf of bread had 33, subtract the slices of bread used, 24. This results in 33-24= 9 slices of bread remaining.
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