Ratio and Proportion

Write each of these ratios in its simplest form.

• 3 : 2

• 8 : 3

• 2 : 3

• 12 : 8

Write each of these ratios in its simplest form.

• 9 : 3

• 9 : 1

• 6 : 3

• 6 : 1

Chakra sees these ingredients for a concrete mix. He says that the ratio of cement to sand is 2 : 1. If the amount of sand is 50 gram. How much is the amount of cement?

• 150 grams

• 100 grams

• 50 grams

• 200 grams

A tin of sweets contains toffees and chocolates in the ratio 3 : 4. The tin contains 35 sweets. How many chocolates are in the tin?

• 20 sweets

• 15 sweets

• 10 sweets

• 25 sweets

Key and Bella share an electricity bill in the ratio 5 : 4. The electricity bill is $ 72. How much does Key much pay ?

• $ 32

• $ 42

• $ 35

• $ 40

A school choir is made up of girls and boys in the ratio 4 : 3.

There are 35 students in the choir altogether.

How many of the students are girls?

• 20

• 15

• 25

• 30

Brad and Lola bought a painting for $120.

Brad paid $80 and Lola paid $40. The ratio of amount that Braid to Lola paid is ________

• 1 : 2

• 2 : 1

• 2 : 2

• 3 : 2

A school choir is made up of girls and boys in the ratio 5 : 4.

There are 45 students in the choir altogether.

How many of the students are boys?

• 25

• 15

• 20

• 30

William and Emma buy a racehorse. William pays $3000 and Emma pays $4000. Write the ratio of the amount they each pay in its simplest form.

• 3 : 4

• 2 : 3

• 1 : 2

• 5 : 4

Rob goes to the gym three times a week. Work out how many times he goes to the gym in 4 weeks

• 10 times

• 16 times

• 12 times

• 20 times