Math quiz to refresh your mind

Three armchairs cost $10,000. How much do a dozen and a half armchairs cost ?

1. 30.000 $
2. 40.000 $
3. 50.000 $
4. 60.000 $
5. 70.000 $

A dozen and a half chairs equals 18 chairs. That's exactly six times three chairs. Three armchairs cost $10,000, while eighteen armchairs cost six times as much, so they come to $60,000. In the example above, the right price is $60,000.


1 - In a large clinic, one nurse looks after four patients. Keeping the same ratio of one to four, how many nurses are needed to care for 500 patients ?

1. 75
2. 100
3. 125
4. 150
5. 175

2 - Frank and Marlla are playing their 24th game of table football. The teams have drawn twelve times and Marlla's team has won a third of the other games. How many games has Frank's team won ?

1. 3
2. 4
3. 5
4. 6
5. 8

3 - Fabrice is saving for his studies. His father encourages him to do so. Every time Fabrice deposits money in the bank, his father pays him double. Fabrice already has $7,200 in his account. How much has Fabrice saved on his own ?

1. 2.400
2. 3.000
3. 3.600
4. 4.800
5. 6.000

4 - A roulette wheel covers a distance of 0.75 m in 12 revolutions. What is the distance covered in 56 revolutions ?

1. 2,5
2. 3,25
3. 3,5
4. 4,5
5. 4,75

5 - The ABC fashion house is selling a fur jacket during a summer sale for $1,200. This is 80% of the normal price. How much does this fur jacket cost, knowing that the selling price includes a 10% mark-up for the retailer ?

1. 1.440
2. 1.650
3. 1.800
4. 1.890
5. 2.040

6 - In a successful deal, a fruit grower paid $165 less for a load of fruit than he had expected. The fruit came to $285, less than two-thirds of the original price. What price did the fruit merchant originally calculate ?

1. 576
2. 585
3. 675
4. 936
5. 1.035

7 - Marlène and Didier are on holiday. They get out of the taxi and have another 140 m to go before they reach the train. Heavily loaded, Didier sets off while Marlène adjusts the taxi. Didier had already covered 15 m when Marlène caught up with him. Despite Didier's head start, Marlène has already reached the train, while Didier still has 20 m to go.
What is the extra distance (in metres) covered by Marlène when Didier covers 3 m ?

1. 1
2. 2
3. 3
4. 4
5. 5

8 - A bulldozer would need seven hours to level a piece of land. As the work has to be done more quickly, a second bulldozer is used.
How many hours do these two machines need to do the job, bearing in mind that the second bulldozer, working alone, would need 9 1/3 hours ?

1. 3
2. 4
3. 5
4. 6
5. 7

9 - A four-lane road 20 m wide must be divided so as to provide a two-lane road on one side and two lanes and a cycle track on the other.
Assuming that the four lanes are the same width and that two thirds of the width of the side without the cycle lane is equal to that of the side with the cycle lane, what space is left for the cycle lane ?

1. 3 1/2
2. 4
3. 4 1/2
4. 5
5. 5 1/2

10 - A shopkeeper does his weekend accounts. He sold 20 shirts for $200, 50 suits for $3,000 and 10 coats for $4,000. How much did the shopkeeper sell each customer on average, assuming that each customer bought one item ?

1. 2.000
2. 2.425
3. 2.870
4. 3.125
5. 3.300

End of quiz !

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