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?
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First, we can see how much you have to multiply the second shape to get the first shape. We can do this by doing 48/8 which is 6. Now we know we need to multiply x by 6 to get 18. This gives us an equation:
ReplyDelete6x = 18
x = 3