Direct and Inverse Proportion

If four video tapes cost $3.20, what would ten video tapes cost?

• $8

• $10

• $6

• $5

Five oranges cost 90 cents. Find the cost of 12 oranges.

• $2.16

• $2.15

• $1.16

• $2.00

Tags

CCSS.6.RP.A.3B

Dylan earns $18.60 in three hours. How much will he earn in eight hours?

• $48.60

• $49.20

• $49.60

• $50

Tags

CCSS.6.NS.B.3

Val has a recipe for making 12 flapjacks.

100 g margarine

4 tablespoons golden syrup

80 g granulated sugar

200 g rolled oats

What is the recipe for 6 flapjacks?

• 30 g margarine, 2 tbsp golden syrup,

  40 g sugar, 100 g oats

• 50 g margarine, 2 tbsp golden syrup,

  40 g sugar, 120 g oats

• 50 g margarine, 4 tbsp golden syrup,

  40 g sugar, 100 g oats

• 50 g margarine, 2 tbsp golden syrup,

  40 g sugar, 100 g oats

Greg the baker sells bread rolls in pack of 6 for $1.

Dom the baker sells bread rolls in packs of 24 for $3.19.

The packs cannot be split.

I have $5 to spend on bread rolls.

How many more can I buy from Greg than from Dom?

• 5

• 6

• 7

• 4

A walker travelling at an average of 6 km/h completes a journey in 4 hours. How long will it take if the average speed is 3 km/h?

• 8 hours

• 8.1 hours

• 7 hours

• 5 hours

A shelf in a shop can display 30 bottles side by side. The bottles are 8 cm wide.

How many boxes 12 cm wide can be displayed side by side on the same shelf?

Ayesha wants to buy some bottles of lemonade for a party. She can afford 20 bottles at $2.50 each. How many can she afford if they cost $2?

A tank is used to store water. If water is used at a rate of 100 litres/day the tank will be empty in 40 days. How long will the water last if it is used at a rate of 50 litres/day?

A group of people hire a coach for a day. If 10 people share the cost it will be 48 dollars each.

How much will it cost per person if:

a 20 people share the cost?

b 15 people share the cost?

• a 24 dollars

• b 34 dollars

• a 22 dollars

• b 32 dollars