Pre-Secondary One Hong Kong Attainment Test · Mathematics

Percentages: Practice Questions

5 multiple-choice questions marked as you go, and 3 written questions with worked solutions. All on Percentages.

8 questions16 marksFree, no account

Question 1

1 mark

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?

Question 2

1 mark

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?

Question 3

1 mark

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?

Question 4

1 mark

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?

Question 5

1 mark

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?

Question 6

2 marks

A sports store sold 240 basketballs last month. This month, it sold 300 basketballs. Find the percentage increase in the number of basketballs sold.

Write your answer out first, then check it against the worked solution.

Question 7

4 marks

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?

Write your answer out first, then check it against the worked solution.

Question 8

5 marks

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?

Write your answer out first, then check it against the worked solution.

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