问题标题：
1)Edwarddivides60stickersintotwogroups.If7timesthenumberofstickersinthesmallergroupisequalto3timesthatinthelargergroup,findthenumberofstickersinthesnallergroup.2)Thereare18True-or-FalsequestionsinaMathematics
问题描述：
1)Edwarddivides60stickersintotwogroups.If7timesthenumberofstickersinthesmallergroupisequalto3timesthatinthelargergroup,findthenumberofstickersinthesnallergroup.
2)Thereare18True-or-FalsequestionsinaMathematicstest.2markswillbegivenforeachcorrectanswerand1markwillbedeductedforeachwronganswer.IfMimianswersallthequestionsandgets24marks,howmanycorrectanswershasshegot?
请问该怎麼求,最好有解释.
Thanks~
孟宪奇回答：
(1)smaller:x,larger:60-x
则7x=3(60-x)
sox=18
(2)correctanswer:x,wronganswer:18-x
则2x-(18-x)=24
sox=14
点击显示
英语推荐
热门英语推荐