机智的小伙伴们，求教这道题的详细做法，多谢啦
\u673a\u667a\u7684\u5c0f\u4f19\u4f34\u4eec\uff0c\u6c42\u6559\u8fd9\u9053\u9898\u7684\u8be6\u7ec6\u505a\u6cd5\uff0c\u591a\u8c22\u5566\u54ea\u4e2a\uff0c\u5148\u91c7\u7eb3\uff0c\u6211\u518d\u5e2e\u4f60
\u9996\u5148\u7b97\u603b\u7684\u8ddd\u79bb\uff1a
\u7b2c\u4e00\u6b21\u5300\u901f\u901f\u5ea6\uff1a2*5=10m/s
\u7b2c\u4e00\u6b21\u8ddd\u79bb\uff1a5*5+10*95=975m
\u7b2c\u4e8c\u6b21\u524d\u4e00\u8f86\u8f66\u7684\u8ddd\u79bb\uff1a5*5=25m
\u7b2c\u4e8c\u6b21\u540e\u4e00\u8f86\u8f66\u7684\u8ddd\u79bb\uff1a975-25=950m
\u540e\u4e00\u8f86\u8f66\u65f6\u95f4\uff1a100-5-20=75s
\u5047\u8bbe\u540e\u4e00\u8f86\u8f66\u52a0\u901f\u5ea6\u7684\u65f6\u95f4\u4e3ax\uff0c\u5219
2x/2 * x + 2x * (75 - x) = 950
\u6240\u4ee5\u5300\u901f\u901f\u5ea62x = 13.25
47+45+48=140 280除以140=2 1班:2x47=94 2班:2x45=90 3班:2x48=96
5755753-56
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