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(1)运动场上9张乒乓球台共有30人在打球,正在进行单打和双打的乒乓球台各有几张?(用假设法解答)
(1)运动场上9张乒乓球台共有30人在打球,正在进行单打和双打的乒乓球台各有几张?(用假设法解答)
2025-03-14 23:04:05
推荐回答(1个)
回答1:
9*2=18 30-18=12
双:12/(4-2)=6(张)
单:9-6=3(张)
学生有:
(100*4-100)/(4-1/4)
=300/15/4
=80 人
教师有:100-80=20人
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