Question
At a school swimming event, 12 of the students were boys. Given that that 27 of the girls and 47 of the boys did not know how to swim, how many students were there altogether if there were 152 swimmers at the event?
4 m

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At a school swimming event, 12 of the students were boys. Given that that 27 of the girls and 47 of the boys did not know how to swim, how many students were there altogether if there were 152 swimmers at the event?