某工程队投资20万元完成了一项工程,比计划节约了5万元。节约投资百分之几?
5÷(20+5)=20%
答:节约投资20%。
小题1:Tom can't join the summer camp because he _______.
A.doesn't speak English well
B.doesn't like the university
C.is 20 years old
D.isn't a Canadian小题2: How much will you pay when you visit Tate Modem Art Gallery with your parents?
A.¥5
B.¥10.
C.¥15
D.It's free.小题3: Where can we see the above reading?
A.On a poster.
B.In a textbook.
C.In a letter.
D.In a guide book.
跃壮五金商店准备从宁云机械厂购进甲、乙两种零件进行销售.若每个甲种零件的进价比每个乙种零件的进价少2元,且用80元购进甲种零件的数量与用100元购进乙种零件的数量相同.
(1)求每个甲种零件、每个乙种零件的进价分别为多少元?
(2)若该五金商店本次购进甲种零件的数量比购进乙种零件的数量的3倍还少5个,购进两种零件的总数量不超过95个,该五金商店每个甲种零件的销售价格为12元,每个乙种零件的销售价格为15元,则将本次购进的甲、乙两种零件全部售出后,可使销售两种零件的总利润(利润=售价-进价)超过371元,通过计算求出跃壮五金商店本次从宁云机械厂购进甲、乙两种零件有几种方案?请你设计出来.