Foundation 11.2 Using Ratio

Thomas makes a model of the Eiffel Tower using a ratio 1:1280. The height of the model is 250mm. What is the height of the Eiffel Tower in metres?

• 250 metres

• 5.12 metres

• 320 metres

The ratio of oyster sauce to fish sauce in a stir fry meal is 2:1. Clara uses 5 teaspoons of fish sauce. How many teaspoons of oyster sauce should she use?

To make orange paint Tom mixes yellow paint to red paint in a ratio of 3:1. She used 4 tins of red paint. How many tins of yellow paint would she have to use?

Write 0.4 : 6 as a whole number ratio in it's simplest form

• 4 : 60

• 1 :15

• 2: 30

• 4 : 15

Write 3.5 : 4.2 as a whole number ratio in it's simplest form?

• 35 : 42

• 5 : 6

• 5 : 7

• 17 : 21

Write 45 : 13.5 as a whole number ratio in it's simplest form?

• 90 : 27

• 60 : 18

• 30 : 9

• 10 :: 3

Sterling silver is made from silver and copper in a ratio of 92.5 : 7.5. What is this ratio on its simplest form?

• 185 : 15

• 37 : 3

• 35 : 3

• 74 : 6

Sterling silver is made from silver and copper in a ratio of 92.5 : 7.5. What is percentage of copper used?

The ratio of chick peas to broad beans to make hummus is 2 : 9. Jack uses 150g of chick peas. How many grams of broad beans does he use?

The ratio of okra : sweet potatoes in a vegetable curry is 15 : 8. Raj uses 160g of sweet potato. He has 350g of okra. Will he use it all?

• YES

• NO