S2 Rate and Ratio

• I and II only

• I and III only

• II and III only

• I, II and III

9 cartons of 250 mL grape juice are sold for $27, the price of grape juice =

• $3 / L.

• $12 / L.

• $36 / L.

• $108 / L.

According to the above prices and quantities in each supermarket, which supermarket has the

lowest price for each pack of seaweed?

• Supermarket A

• Supermarket B

• Supermarket C

• Supermarket D

Suppose we can exchange EUR 1 for HKD 8.8 and GBP 1 for HKD 11. How much GBP can we

exchange for EUR 100?

• GBP 80

• GBP 96.8

• GBP 125

• GBP 198

Maggie walks 400 m at a constant speed in first 2 minutes, then she increases the walking

speed by 25% in the next 8 minutes. Find the average walking speed of Maggie in these 10

minutes.

• 90 m /minute

• 200 m /minute

• 240 m /minute

• 480 m /minute

It is given that the speed of sound is 343 m/s. If Andy faces a vertical hillside and shouts, he

will hear his echo after 14 seconds. What is the distance between Andy and the hillside?

• 4 802 m

• 2 401 m

• 49 m

• 24.5 m

8 : 116 =

• 1 : 12.

• 12 : 1.

• 2 : 29.

• 29 : 2.

18 seconds : 2.4 minutes =

• 1 : 8 .

• 8 : 1 .

• 2 : 15.

• 15 : 2.

If 3:13 = x :195, find the value of x.

• 39

• 45

• 65

• 845

If there are 21 textbooks and 33 comic books on a bookshelf, find the ratio of the number of

textbooks to the number of comic books.

• 1 : 3

• 3 : 1

• 7 : 11

• 11 : 7