Direct Proportion

Question 1

If 7 kg of apples cost $21, what is the cost of 3 kg of apples?

Accepted Answer

$9

Question 2

A tap fills a 30-litre tank in 10 minutes. How long will it take to fill a 45-litre tank at the same rate?

Accepted Answer

15 minutes

Question 3

If 5 notebooks cost $20, how much do 8 notebooks cost?

Accepted Answer

$32

Question 4

A delivery van uses 8 litres of fuel to travel 120 km. If fuel costs $1.60/L, what will it cost to travel 375 km?

Accepted Answer

$40.00

Question 5

If 4 meters of cloth cost $36, how much will 6.5 meters cost?

Accepted Answer

$58.50

Question 6

A bus covers 240 km in 4 hours. What is the distance covered in 7 hours at the same speed?

Accepted Answer

420 km

Question 7

If 2.5 kg of rice costs $12.50, how much would 6 kg of rice cost?

Accepted Answer

$30.00

Question 8

A factory produces 240 items in 6 hours using 3 machines. How many items will it produce in 10 hours using 5 machines?

Accepted Answer

667 items

Question 9

A cyclist travels 90 km in 3 hours. How long will it take to travel 135 km at the same speed?

Accepted Answer

4.5 hours

Question 10

A worker earns $120 for 8 hours of work. How much will they earn in 5 hours?

Accepted Answer

$75

Question 11

If 3 pens cost $6, how much do 5 pens cost?

Accepted Answer

$10

Question 12

An electrician charges $60 for 3 hours. What would be the charge for 7 hours?

Accepted Answer

$140

Question 13

A car travels 180 km in 3 hours. How far can it go in 5 hours at the same speed?

Accepted Answer

300 km

Question 14

A taxi charges $15 for a 5 km ride. What will be the cost for a 12 km ride?

Accepted Answer

$36

Question 15

If 6 identical chairs cost $270, what is the cost of 9 chairs?

Accepted Answer

$405

Questions 15