F.2 Ch.7 Rate, ratio and proportions

Julie’s car can travel 480 miles on 15 gallons of gasoline. What is the number of miles per gallon?

朱莉的车加 15 加仑汽油可以行驶 480 英里。求率英里/加侖？

• 30

• 32

• 32.5

• 30.2

A certain kind of carrot is sold at $8/kg. What is the price for 16 kg of carrot?

某種胡蘿蔔的售價為每公斤 8 美元。 16公斤胡蘿蔔多少錢？

• $2

• $32

• $64

• $128

The ratio of Sam’s weight to Leo’s weight is 6 : 5. If the sum of their weights is 132 kg, find the difference between their weights.

Sam的体重与Leo的体重之比为6：5。如果他们的体重之和为132公斤，求他们体重之间的差值。

• 11 kg

• 12 kg

• 13 kg

• 14 kg

Use the table to write the ratio of peppers to carrots.

求peppers 與 carrots的比。

• 29:1

• 1:29

• 29:13

• 13:29

Find three equivalent rations for the ratio 11:12.

• 12:24, 13:36, 14:48

• 11:24, 11:36, 11:48

• 22:24, 33:36, 44:48

• 12:13, 13:14, 14:15

Find an equivalent ratio.

3:10

• 1 to 3

• 9 to 30

• 6:13

• 12:48

Find an equivalent ratio.

8:6

• 4 to 3

• 16 to 9

• 2:1

• 10:48

• x = 8

• x = 10

• x = 4

• x = 5

• x=75

• x=50

• x=27

• x=43

If x : y =5 : 6 and y : z = 3 : 2, find x : y : z.

• 5:6:4

• 5:4:6

• 4:5:6

• 6:4:5