Inverse relationship + direct relationship - practice problems - page 6 of 13
Number of problems found: 260
- Troops - soldiers
Food stocks will last 20 soldiers of the 4-day training. How many days could they extend training if four soldiers become sick? - 4 pipes
The tank flows out by four pipes in 6 hours 120 hl water. How much water flows out of 5 pipes of the same diameter in 14 hours? - Sisters
Sisters Zuzka Lenka and Vierka have saved for a new bike. Zuzka save € 90, Lenka save € 90 and Vierka save € 82. Missing 30% gave them their mother. What is the price of the bike? - Train and car
The train and the car started at a constant speed journey. When the train travels 87 km, the car travels 97 km. How many km travels the train when the car travels 87 km? - Workshops 67984
Thirty-two tons of oranges are processed in eight workshops with 40 employees each. How many workers process 9 tons of oranges in 9 workshops? - Gasoline 65034
My father refueled 40 liters of gasoline for 61.40 euros. He then refueled 8 liters of the same petrol into an empty canister. How many euros did gasoline cost in a canister? - Minutes 31571
The typist typed 16 pages of text in 2 hours and 8 minutes. How many pages of text will you write at the same speed in 20 minutes? - Flowerbed 17183
Six pupils will adjust the flower beds on the school grounds in 2 hours. In how many hours will four pupils change the same flowerbed? - In the bakery
24 pieces of bread are baked in the bakery in 2.25 hours. How many breads are baked in the bakery in 6 hours and 45 minutes? - Distance 13311
On what scale is the map drawn? The actual distance of 1250 km is shown by a line 25 cm long. - Identical 5362
120 hl of water flows out of the tank through 4 pipes in 16 hours. How much water flows through 5 identical pipes in 14 hours? - Tributary 3466
The swimming pool is filled with four inflow pipes in 9 hours. If one tributary is broken, how long will it be filled? - Identical 2804
Eighty identical light bulbs shine in the sports hall for two hours. How long does it take to consume the same energy from 100 such bulbs? - Cornbreads
If four and a half teaspoons of baking powder are needed to make ten servings of cornbread, how many teaspoons are needed to make 25 servings? - Ember
Ember spent $144 on her birthday party for 18 guests. If the cost is at the same rate, how many guests will there be if she pays $176? - Eight masons
Eight masons will plaster a wall with an area of 1440 m² in 9 days. They work 8 hours a day. How much area will plaster six masons in 4 hours? - Apples
The school kitchen bought 36kg apples for 12 kc/kg. How many kilograms of apples 1/4 cheaper can they buy for the same money? - 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? - Pumps
Four identical pumps fill the tank in 40 hours. How many pumps would we have to use if we wanted to save 8 hours? - Railings 82711
Seven part-timers paint 280 m of railings in 5 hours. How many meters of railing will nine part-timers paint in 4 hours?
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