Direct relationship - practice for 12 year olds - page 9 of 18
Number of problems found: 347
- 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? - Seedlings 6051
A forest nursery needs an area of 1.25 square meters per pine seedling. How many pine seedlings are planted in an area of 9 acres? - Capacity 5999
The tank is filled in 1 hour and 12 minutes with a pump with a capacity of 25 l/s. How long does filling the tank with a 20 l / s pump take? - Received 5995
Jeníček, Karel, and Martin shared the money from the brigade in a ratio of 2:4:3. Karel received the most, namely 12.60 euros. How much did Jeníček and Martin get together? - Five pumps
The water tank is filled with two pumps in 48 minutes. How long would it take to fill it with five same pumps? - Cylinder-shaped vase
If the cylinder-shaped vase is filled with water up to 35 cm, it contains 1 liter of water. How much water will it contain if it is filled to a height of 45cm? - Olda wanted
Oldrich wanted to enlarge the 9 cm x 13 cm photo so that the shorter side measured 18 cm. How big will the longer side of the photo be? - Twelve
Twelve students work on a week forestry brigade. One hundred spruces will receive x CZK, one hundred pine y CZK. How many receive each student in one day if they planted a total of 25,000 spruces per week and 30,000 pine trees? Express by expression. - Babysitting
The amount Susan charges per hour for babysitting is directly proportional to the number of children she watches. She charges $4.50 for three kids. How much would she charge for babysitting five kids? - Anywhere 5880
The bus runs 6 km in 9 minutes. How many minutes will the bus go to a place 42 km away if it doesn't stop along the way? - Scale of the map
The distance between the two cities is actually 30 km, and the map is 6 cm. What is the scale of the map? - Separated 5878
How many cm on a map with a scale of 1:150,000 will two cities be separated when their distance is 30 km? - Measures 5876
How many km does the trip's route actually measure, which measures 28 cm on a map with a scale of 1: 75,000? - Natural gas in kWh
Gas consumption for 2017 was 11,301 kWh I paid 532 € How much is 1 m³? - Performances 5782
A group of three girls won a € 30 science competition. Kamila, Magda, and Zuzka divided the win according to their performances in the ratio of 3:4:5. How many euros have each of them? - Distance 5773
The air distance from the hotel to the castle is 4.4 km. What is the map's scale on which this distance is shown by a line 4 cm long? - Garden
The rectangular garden has dimensions of 27 m and 30 m. Peter and Katka split it in a ratio of 4:5. How many square meters did Katkin measure part of the garden? - Pellets
One pallet of pellets costs 5040 without VAT. One pallet weighs 1050 kg. How much do 1-ton costs? - Contains 5566
100g of yogurt contains 150mg of calcium. How many kg of yogurt would we have to eat to meet the daily dose of calcium 1000mg? - Pamela
Lara Pamela spends her salary of 3000 on food, clothing, recreation, and savings, which are in the ratio of 48:20:15:37, respectively. How much does he spend on savings?
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