Question
At a school swimming event, 12 of the students were boys. Given that that 12 of the girls and 56 of the boys did not know how to swim, how many students were there altogether if there were 156 swimmers at the event?
4 m

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At a school swimming event, 12 of the students were boys. Given that that 12 of the girls and 56 of the boys did not know how to swim, how many students were there altogether if there were 156 swimmers at the event?