Working with Ratios (Cambridge (CIE) IGCSE Maths: Extended)

One day, the newspaper had 60 pages of news and advertisements.
The ratio  number of pages of news : number of pages of advertisements =  .

i) Calculate the number of pages of advertisements.   

[2]

ii) Write the number of pages of advertisements as a percentage of the number of pages of news.   

........................................... % [1]

Marianne sells photos.
The selling price of each photo is $6.
The selling price for each photo is made up of two parts, printing cost and profit.
For each photo, the ratio       printing cost : profit = 5 : 3.  

Calculate the profit she makes on each photo.  

$ ...............................................

The Muller family are on holiday in New Zealand.
The family visit two waterfalls, the Humboldt Falls and the Bridal Veil Falls.
The ratio of the heights Humboldt Falls : Bridal Veil Falls = 5 : 1.
The Humboldt Falls are 220 m higher than the Bridal Veil Falls.

Calculate the height of the Humboldt Falls. 

.............................................m

Adele, Barbara and Collette share $680 in the ratio 9 : 7 : 4.

Show that Adele receives $306.

Calculate the amount that Barbara and Collette each receives.

 Barbara $ ...............................................

Collette $ ...............................................

Some visitors to a campsite are in the ratio

and .

i) Calculate the ratio  in its simplest form.  

................... : ................... : ................... [2]

ii) There are 224 children at the campsite.
Calculate the total number of men and women.  

[3]

One day Dhanu plays with his model railway from 06 50 to 11 15. He then rides his bicycle for 3 hours.

Find the ratio .
Give your answer in its simplest form.

......................... : .........................

Ali and Mo share a sum of money in the ratio Ali : Mo = 9 : 7. Ali receives $600 more than Mo.

Calculate how much each receives.

Ali $ ...................................................

Mo $ ...................................................