Question
At a school swimming event, 13 of the students were girls. Given that that 37 of the boys and 67 of the girls did not know how to swim, how many students were there altogether if there were 144 swimmers at the event?
4 m

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At a school swimming event, 13 of the students were girls. Given that that 37 of the boys and 67 of the girls did not know how to swim, how many students were there altogether if there were 144 swimmers at the event?