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標題:

數學題(請列式，答案該是60)

發問:

There are 6 Arts books in a bookcase .The number of Arts books in that books is 25% that of Scientific fictions,and the number of Scientific fictions is 40% of the whole of books how many books are there in the bookcase?

• 20年代.60年代.現在食咩零食
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• 20年代.60年代.現在食咩零食
• 無恐不入 - 飾演卡露兒子奧利華的演員，乃首次參與電影演出，這位演員是-
• 大角咀有咩車可去數碼港？

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最佳解答:

假設有 x books in the bookcase the number of Scientific fictions = 0.4x the number of Arts books =0.25*0.4x 0.1x = 6 x = 60 There are 60 books in the bookcase

其他解答:

let there have x books in the bookcase the no. of Scientific fictions = 0.4x the no. of Arts books =0.25*0.4x=0.1x=6, x=60 so there have 60 books in the bookcase