1.- If we simplify the ratio 20:25, we obtain:

a) 4:5

b) 2:3

c) 10:12

d) None of them

2.- Find out the x in this proportion:

a) x = 12.5

b) x = 12

c) x = 13

d) x = 13.5

3.- The magnitudes side of a rectangle and its area have ...

a) a direct proportionality relationship

b) an inverse porportionality relationship

c) no relationship

4.- If we have 1000 kg of food for cows, the magnitudes number of cows and days the food lasts have...

b) an inverse proportionality relationship

d) none of them

5.- If 7 kg of sweets costs 1.75 €, how much does 3 kg cost?

a) 1.50 €

b) 0.75 €

c) 1 €

6.- If I travel at 50 Km/h, it takes 1 hour and 30 minutes to complete the trip. How long will it take if I travel at 75 km/h?

a) 1 hour

b) 1 hour and 20 minutes

c) 2 hour and 15 minutes

d) 2 hours and 25 minutes

7. 15% of 40 is

a) 12

b) 24

c) 6

d) 15

8.- The equivalent fraction to 20% is

a) 1/5

b) 20/10

c) 2/100

9.- The decimal number equivalent to 110% is

a) 0.11

b) 1.1

c) 1.0

10.- A suit that costs 100 €, had a 20% discount last month. This month they have increased the price by 20%. Now its price is

a) 100 €

b) 110 €

c) 96 €

Licensed under the Creative Commons Attribution Non-commercial Share Alike 3.0 License