How many slices?
A baker made a large chocolate cake and cut it into 24 equal slices. She sold 1/3 of the cake in the morning and 3/8 of the remaining slices in the afternoon. How many slices of cake are left at the end of the day?
A box of biscuits
A box of biscuits contains 36 biscuits. 20 biscuits have foil wrappers. 15 are chocolate biscuits with foil wrappers. If 9 are not chocolate and do not have a foil wrapper, then how many chocolate biscuits are there?
1/3 of 24 is 8, meaning we have 24 - 8 = 16 slices left. Then, she sold 3/8 of the remaining slices in the afternoon. If we have 16 remaining slices, then we must find out what 3/8 of 16 is. This is 6, which means she sold 6 of the 16 slices and therefore ended up with 10 slices
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