Quantitative Aptitude Mock Test 7 Welcome to your Quantitative Aptitude Mock Test 7 The ratio of the number of boys to the number of girls in a class is 3:2. If there are 18 boys in the class, how many girls are there? 8 6 12 4 Two quantities are in the ratio 5:7. If the smaller quantity is 35, what is the larger quantity? 39 29 59 49 A bag contains coins of 50p, 25p and 20p in the ratio 2:3:4. If the total value of the coins is £2.50, what is the number of 50p coins in the bag? 20 25 45 50 Hint If a:b=3:5 and b:c=2:7, what is the ratio a:c ? 6:35 6:25 7:35 8:35 Hint A recipe for a cake calls for 2 cups of flour and 1 cup of sugar. If you have 4 cups of flour, how many cups of sugar do you need? 4 5 2 1 Hint A train travels 200 kilometers in 2 hours. What is the average speed of the train? 50 kilometers per hour 100 kilometers per hour 20 kilometers per hour 30 kilometers per hour Hint A mixture of water and alcohol is in the ratio 2:3. If there is a total of 10 liters of the mixture, how much alcohol is in the mixture? 12 16 6 20 Hint A car uses 10 liters of fuel to travel 100 kilometers. What is the fuel efficiency of the car? 10 kilometers per liter 15 kilometers per liter 12 kilometers per liter 8 kilometers per liter Hint Time's up