1E Ratio and Rate

Express the following ratio in its simplest form.

144 : 132 = ____ : _____

• 12 : 11

• 11 : 12

• 72 : 66

• 24 : 12

Express the following ratio in the simplest form.

1.6 m : 36 cm

hint: 1 m = 100 cm

• 0.4 : 9

• 4 : 9

• 40 : 9

• 2 : 50

Express the following ratio in the simplest form.

0.48 :  $2\frac{2}{15}$  

hint: make 0.48 into a fraction and compare the 2 numbers. 

• 12 : 32

• 48 : 213

• 36 : 160

• 9 : 40

Given that a : b = 5 : 3 and b : c = 4 : 1, find the ratio of

a : b : c .

• 5 : 12 : 1

• 15 : 12 : 4

• 20 : 12 : 3

The perimeter of a rectangular TV screen is 150 cm. The ratio of the width to the height of the TV screen is 16 : 9. Find the area of the screen.

• 144 cm²

• 432 cm²

• 1296 cm²

• 5184 cm²

Rahman works 5 days a week and 8 hours a day. His daily wage is $184. Find his hourly wage rate.

Answer: $___ per hour

Rahman works 5 days a week and 8 hours a day. His daily wage is $184. Find his weekly wage.

A 5-kg pack of Brand A rice is sold for $9.60 and a 10-kg pack of Brand B rice is sold for $18.60.

Which pack of rice is more value for money if the quality of both brands of rice is the same?

On a certain day, 4 000 Singapore dollars (SGD) can be exchanged for 25 300 Hong Kong dollars (HKD). Find the exchange rate between Singapore dollars and Hong Kong dollars in SGD/ HKD.

correct your answer to 4 decimal places.

Hint:

SGD/HKD means ______SGD per HKD.

On a certain day, 4 000 Singapore dollars (SGD) can be exchanged for 25 300 Hong Kong dollars (HKD). Find the exchange rate between Singapore dollars and Hong Kong dollars in HKD/ SGD.

correct your answer to 4 decimal places.

Hint:

HKD/ SGD means ______HKD per SGD.