Ratios Quiz

The ratio of apples to oranges in a fruit basket is 7:3. If there are 21 oranges, how many apples are there?

Which of the following is an example of odds notation?

The total number of ducks and geese in a pond is 40. If there are 12 ducks, what is the ratio of ducks to geese?

There are 30 students in a class, the ratio of boys to girls is 2:1. Assuming the same number of boys, how many more girls are needed in the class to invert this ratio (i.e so that it is 1:2)?

Out of 100 pens, 30 are red, 45 are blue and the rest are green. Which of the following expresses the ratio of red pens to green pens to blue pens?

x:4 = 3:28 x = ?

If x is 4 times bigger than y, and the difference between x and y is 9, what is x equal to?

The scale on a map is 9cm : 10km. If two cities are 80km apart, how far away are they on the map?

For every 6 apples Tom buys, he eats 2, and gives 2 to his sister. For every 5 apples his sister gets from Tom, she eats 3. If Tom buys 60 apples, how many of them will be eaten?

John has 4 times more pencils than Megan. He gives he Megan 4 pencils, and now he only has twice as many pencils. How many pencils did Megan start with?