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Of the 240 campers at a summer camp, 5/6 could swim. If 1/3 of the campers took climbing lessons, what was the least possible number of campers taking climbing lessons who could swim?

a) 20
b) 40
c) 80
d) 120
e) 200

  • algebra - ,

    80 campers took climbing lessons. It is possible that all 80 of them were among the 200 who could swim, or that as many as 40 of them could not. The smallest possible number is of climbing swimmers is 80 - 40 = 40

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