作业帮I have $2.95.The 37 coins are all either 5 cent 0r 10 cent coins .How many 5 cent coins do I have
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I have $2.95.The 37 coins are all either 5 cent 0r 10 cent coins .How many 5 cent coins do I have
I have $2.95.The 37 coins are all either 5 cent 0r 10 cent coins .How many 5 cent coins do I have
I have $2.95.The 37 coins are all either 5 cent 0r 10 cent coins .How many 5 cent coins do I have
我有2.95美元,（这些美元是由37枚硬币组成的）这37枚硬币的币值只有5分与10分两种~
X+Y=37
0.05X+0.1Y=2.95
解得 X=15 y=22
楼上正解~~方程式好正经啊~·
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I have $2.95.The 37 coins are all either 5 cent 0r 10 cent coins .How many 5 cent coins do I have
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