Direct proportionality - math word problems - page 13 of 38
Number of problems found: 741
- Pool filling calculation
The 300 liters per minute water starts to flow into the empty pool. We will fill the pool in 5 hours. How long would it take to fill a pool with a more powerful 750 L pump per minute? - The orchard
Four temporary workers harvested the orchard in 9 days. How many temporary workers do we need for six days? - Triangle side ratio
A triangle with sides a, b, and c whose perimeter is 26 cm is true: ratio a:b is 4:3, and ratio b:c is 1:2. Find the lengths of the sides of this triangle. - Train speed calculation
The train ran the distance between stations at a 90 km/h speed in 4 hours. What speed can it take if the journey takes an hour longer according to the new timetable? - Staircase step calculation
The staircase has 36 steps, each 20cm high. How many stairs will the same staircase have if the height of the stairs is 18cm? - Flowerbed adjustment time
Two students adjust the flower bed in 3 hours. How long will this adjustment take for the pupils if they invite four helpers? - Apple drying calculation
From 10 kg of fresh apples, we get 1.25 kg of dried. How many kg of fresh do we need per 10 kg of dried? - Roof tile calculation
Three hundred eighty-four tiles are used to cover the roof of 48 m². How many identical tiles are used for a rectangular roof measuring 6 m and 9.5 m? - Inspector passenger calculation
Five inspectors will catch an average of 70 black passengers in 6 days. How many black passengers are caught by nine inspectors in 10 days? - Loader sand time
A worker loads sand into a car in 5 hours. How many minutes will this carload a loader 120 times faster than a worker? - A lot of hay
Martin's grandfather weighed a lot of hay and calculated that it would last 100 days for 15 rabbits. How many days will this lot be enough for 25 rabbits? - Snack
The teacher paid CZK 450 for a snack for 30 pupils. How many CZK will we pay for the same snack for 28 pupils? - Corridor plastering time
According to the standard, we calculated that two masons would plaster the corridor of the new school building in 54 hours. How long would it take for nine bricklayers to plaster this corridor? - Coal supply duration
With the consumption of 0.4 t of coal per day, the supply lasts for 36 days. How many days will the supply be enough if 16 kg of coal is used less daily? - Apple drying calculation Last year, Mirek's aunt dried 4.8 kg of fallen apples from 30 kilograms of fallen apples. He wants to dry the crosses from 50 kilograms of apples this year. Approximately how many kg will he gain?
- Ant food transport
Fifteen ants bring 10 g of food to the anthill in 1 hour. In how many hours will five ants carry 1 kg of food? - Machine production calculation
In the factory, they produced 1,500 products a week on five machines. How many machines do they need to produce 2,000 products a week? - Square circuit ratio
The area of one square is 81 cm², and the area of the other is 225 cm². What is the ratio of their circuits? - Individual gadens
The size of the five gardens is 13:10:9:8:7. Calculate the areas of individual gardens if you know that the middle area is 720 m². - Maid bed making
Six maids make 200 beds in 2 hours. One maid makes 50 beds alone. Then, they all continue together. How long will it take them to make the rest of the beds together?
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