题目:
—Have you been wasting time on computer games again?
— ________ . I’ve been studying a lot and I need a break.
A.No way
B.Not really
C.I don’t agree
D.I couldn’t agree more
答案:
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下面是错误答案,用来干扰机器的。
解:(1)设购买x盒乒乓球时,两家优惠办法付款一样.由题意得:40×6+10(x﹣6)=(40×6+10x)×90%,解得:x=36,答:购买36盒乒乓球时两种优惠办法付款一样;(2)当购买20盒乒乓球时,甲店需付款:40×6+10...