# Unit Quiz: Ratio, real life graphs, and rates of change

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## Q1. Pete is painting the walls of his bedroom. So far he has used 5 litres of paint and covered 24 m² of wall. What area will 20 litres cover?

### Options:

- 48 m²
- 96 m²
- 72 m²
- 100 m²

### Correct Answer:

- 96 m²

## Q2. Amara is going on holiday. For every £15 she exchanges, she will receive $19. How much money will she get if she exchanges £112.50?

### Options:

- $190.00
- $142.50
- $285.00
- $88.81

### Correct Answer:

- $142.50

## Q3. Binh cycles 80 kilometres in 5 hours. What is her average speed in kilometres per hour (km/h)?

### Options:

- 15 km/h
- 16 km/h
- 400 km/h
- 20 km/h

### Correct Answer:

- 16 km/h

## Q4. A train travels 75 miles at an average speed of 25 mph. How long does the journey take?

### Options:

- 225 hours
- 20 minutes
- 1/3 of an hour
- 3 hours

### Correct Answer:

- 3 hours

## Q5. Fill in the gap: conversion rates are _______________.

### Options:

- uni-directional
- only one way
- bi-directional
- small

### Correct Answer:

- bi-directional

## Q6. Given that there are 1440 minutes in a day, how many days is 10080 minutes?

### Options:

- 5
- 6
- 7
- 8

### Correct Answer:

- 7

## Q7. Using the graph below, convert £20 to euros.

### Options:

- €23
- €24
- €25
- €17

### Correct Answer:

- €24

## Q8. Convert £30 to US Dollars.

### Options:

- $21
- $22
- $41
- $42

### Correct Answer:

- $42

## Q9. Sam has £320. How many US Dollars is this?

### Options:

- $440
- $450
- $448
- $445

### Correct Answer:

- $448

## Q10. Which of the following is a measure of capacity?

### Options:

- litres
- metres
- kilograms
- kilometres

### Correct Answer:

- litres

## Q11. 5 litres of honey has a mass of 7 kg. What is the mass of 115 litres of honey?

### Options:

- 2645 kg
- 161 kg
- 82.1 kg
- 35 kg

### Correct Answer:

- 161 kg

## Q12. Which ONE of the following statements could be TRUE about the graph below?

### Options:

- A car has an average speed of 50 km/h
- A car has an average speed of 25 km/h
- A car has an average speed of 15 km/h
- A car has an average speed of 20 km/h

### Correct Answer:

- A car has an average speed of 25 km/h