Direct relationship + simple proportion - practice problems
Number of problems found: 72
- Two brothers
The two brothers were to be divided according to the will of land at an area of 1ha 86a 30m² in a ratio of 5:4. How many will everyone get?
- Electric energy
There are 875 identical light bulbs in the sports hall lighting for 2 hours. How long does the same amount of electricity consume 100 such bulbs?
- Trapezoid - intersection of diagonals
In the ABCD trapezoid is AB = 8 cm long, trapezium height 6 cm, and distance of diagonals intersection from AB is 4 cm. Calculate the trapezoid area.
- Five pumps
The water tank is filled with two pumps in 48 minutes. How long would it take to fill it with 5 same pumps?
1 pallet of pellets costs 5040 without VAT. 1 pallet weighs 1050 kg. How much does 1 ton costs?
I drive at an average speed of 70km/h, I drive 10 thousand km. How long did it take me?
- Sugar 9
150 kg of sugar beet yields 24 kg of sugar. From how many tons of sugar beet can be obtained three tons of sugar?
- Tree shadow 3
A 2-meter rod casts a shadow 3.2 m long. How high is a tree with a shadow of 14.4 m?
The baker makes from 10 kg of flour 12 kg dough. How much flour he need to make a 100 kg dough?
For 7 hours of study, she scored a 75, so if she made 93, how many hours would she need to study?
There are red, blue and green candies in bad. Red to green is in 6:11 ratio and blue to red in a 7: 5 ratio. In what proportion are blue to green candies?
Five pumps pumped 1,800 hl of water for 3 hours. How many hectoliters of water pump same two powerful pumps for six hours?
- Dried apples
How many kilograms of fresh apples id needed to 120 kg of dried apples when from 0.4 tons of fresh apples we get 75 kg of dried apples?
- Bicycle gears
The toothed wheel on the bicycle pedal has 40 teeth, the wheel on the rear wheel has only 16 teeth. How many times does the rear wheel turn if the pedals rotate 50 times?
For nearly full tank of 40 liters of gasoline chauffeur paid 54 euros. How many euros it will cost to go 250 km long if the car has an average fuel consumption 7 liters per 100 kilometers?
18 m railway weighs 1260 kg. How much weighs 100 m of welded railways?
- Painting rooms
If Dano paints three hours daily, he complete in 7.5 days. How many hours a day would have to work to finish the job 1.5 days earlier?
- Good swimmer
The good swimmer swims 23 m distance with ten shots. How many shots does he swim to an island located 81 m if he still swims at the same speed?
From 3 tons of sugar beet was produced 480 kg of sugar. How many tons of sugar was produced from 17.5 tons of sugar beet?
Four identical pumps fill the tank in 40 hours. How many pumps would we have to use if we wanted to save 8 hours?
Direct relationship - practice problems. Simple proportion - practice problems.