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 €
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