甲乙两人射击,若命中,甲得4分,乙得5分;若不中,甲失2分,乙失3分,每人各射10发,共命中14发,结算分数时,甲比乙多10分,问甲、乙各中几发?
人气:141 ℃ 时间:2020-06-26 18:01:19
解答
4×10-[5×4-3×(10-4)]-10,
=40-2-10,
=28(分);
甲:10-28÷(5+3+4+2),
=10-2,
=8(发);
乙:14-8=6(发);
答:甲中8发,乙中6发.
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