This "Before and After" question provides the total before and the total after the change.
One of the party undergo percentage decrease while the other party undergo a value increase.
Such questions are common in Paper 2.
Calculator usage is allowed.
At first, there were 180 adults and children in a cinema.
After an additional 24 adults entered the cinema and 25% of the children went home,
there were a total of 179 adults and children in the cinema at the end.
How many adults were there at the end?

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