問 1
1 点A school club has 24 boys and 36 girls. What is the ratio of the number of boys to the total number of students in the club, expressed in its simplest form?
Pre-Secondary One Hong Kong Attainment Test · Mathematics
Percentages：練習問題
その場で採点される選択問題 5 問と、解説つきの記述問題 3 問。すべて「Percentages」からの出題です。
8 問16 点無料・登録不要
問 2
1 点The ratio of the number of apple trees to orange trees in an orchard is \( 7 : 4 \). If there are 84 apple trees, what is the total number of trees in the orchard?
問 3
1 点The price of a laptop was \$5,500. During a sale, it is sold at a discount of \( 15\% \). If a customer uses a membership card, they get an additional \( 5\% \) discount on the discounted price. What is the final price of the laptop?
問 4
1 点In a library, there are \( 500 \) books. \( 45\% \) of the books are fiction, and the rest are non-fiction. How many non-fiction books are there in the library?
問 5
1 点A bag contains red and blue marbles. The ratio of the number of red marbles to the number of blue marbles is \(3 : 5\). If there are 40 blue marbles, how many red marbles are there?
問 6
2 点A sports store sold 240 basketballs last month. This month, it sold 300 basketballs. Find the percentage increase in the number of basketballs sold.
まず自分で答えを書いてから、解説と照らし合わせましょう。
問 7
4 点There are \(160\) students in a school hall. If \(35\%\) of them are boys and the rest are girls, what is the ratio of the number of boys to the number of girls in its simplest form?
まず自分で答えを書いてから、解説と照らし合わせましょう。
問 8
5 点A fruit juice mixture is made by mixing orange juice and water. The mixture contains \(65\%\) orange juice. If a bottle contains \(455\text{ mL}\) of orange juice, how much water, in \(\text{mL}\), is in the bottle?
まず自分で答えを書いてから、解説と照らし合わせましょう。
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