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[单选题]
王老师圆珠笔和钢笔共买了15枝,圆珠笔每枝1.5元,钢笔每枝4.5元,共花了49.5元,圆珠笔和钢笔各买了多少枝()
A.(1)7支圆珠笔,8支钢笔
B.(2)9支圆珠笔,6支钢笔
C.(3)6支圆珠笔,9支钢笔
![](https://static.youtibao.com/asksite/comm/h5/images/m_q_a.png)
C、(3)6支圆珠笔,9支钢笔
![](https://static.youtibao.com/asksite/comm/h5/images/solist_ts.png)
A.(1)7支圆珠笔,8支钢笔
B.(2)9支圆珠笔,6支钢笔
C.(3)6支圆珠笔,9支钢笔
C、(3)6支圆珠笔,9支钢笔
A.10元
B.11元
C.17元
D.21元
A.5×2.5+2X=13
B.(5+2.5)X=13
C.2×2.5+5X=13
A.单位1是钢笔的价钱
B.单位1是圆珠笔的价钱
C.可设圆珠笔价钱为x元,则钢笔的价钱是4.4x元。列等量关系式为4.4x—x=6.8
D.可设圆珠笔价钱为x元,则钢笔的价钱为4.4x元。列等量关系式为x+6.8=4.4x