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Kath1985

24.3022-!-item-!-187;#058&003084

In a certain game, the units of currency of three countries are the crown, the shield, and the pound, respectively.If 2 crowns equal 3 shields and 3 shields equal 4 pounds, how many crowns equal 18 pounds?



(A)9

(B) 16

(C) 18

(D) 32

(E) 36

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【答案】A


根據題目說的how many crowns equal 18 pounds 所以我用連比來做
[attachimg=187,234]85404[/attachimg]
得出結論是 9個c等於18pounds
但我想問:
1為什麼c 和p 要同乘4.5 ?
2.how many crowns equal 18 pounds 是什麼意思呢?
3.9個c等於18pounds是什麼意思呢 相當困擾

sdcar2010

What the stimulus says is that 2 crowns equal 4 pounds, or each crown equal 2 pounds.  If you have 18 pounds, how many 2 pounds do you have? 9. Since every 2 pounds equal one crown, you have 9 crowns.

Third grade math.