Inverse proportion - practice problems - page 9 of 21
Number of problems found: 406
- 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? - Milk2cheese
From 40 liters of milk, 8 kg of cheese is produced. How many liters of milk are needed to produce 2 kg of cheese? - Flowerbed adjustment time
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? - Clock gear turns
There are two gears in the wall clock. The larger wheel has 54 teeth, and the smaller one has 24 teeth. How many times does the small wheel turn if the big one turns four times? - Strawberry harvest calculation
On the farm, twelve part-timers planned to harvest a crop of strawberries in 5 days. On the fifth day in the weather forecast, they reported rain. How many part-timers will they need to harvest the strawberries in four days? - Worker's performance
Fifteen workers paint a 180 m fence in 3 days. In how many days will nine workers paint a 360 m fence? We assume that each worker has the same, constant, and unchangeable performance. - Pipe water flow
100hl of water flows out of the tank through three pipes in 8 hours. How many hectoliters of water flow through four pipes in 10 hours? - Fast tourists
If three tourists pass the route in 5 hours, how long will the same route take six equally fast tourists? - The bakery
The bakery baked 325 cakes from 25kg flour. How many kilograms of flour do they need to bake 195 pieces of such cakes? - Tank filling calculation
Five 1800hl filling pumps in 3 hours for how long does a 4hl filling 1800hl tank? - Pool filling graph
The pool has 12 flow holes, 3 of which are open. It fills up in 24 hours. Express the dependence of the pool's filling time on the number of open flow holes and construct a graph. - Harvester field calculation
Five combine harvesters shit in 12 days. How long does a 2-fold larger field of combine harvesters take? - One third power
Which equation justifies why ten to the one-third power equals the cube root of ten? - Trio ratio
Hans, Alena, and Thomas have a total of 740 USD. Hans and Alena split in the ratio of 5:6, and Alena and Thomas in the ratio of 4:5. How much will everyone get? - Temporary workers
Three temporary workers work in the warehouse and unload the goods in 9 hours. At what time would five temporary workers unload the same products? - 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? - Map scale calculation
On what scale is the map drawn? A 25 cm long line shows the actual distance of 1250 km. - Fraction product puzzle
Fraction 2/3 multiplied by such a fraction that the product is equal to 1 - 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?
- Resistor current calculation
At a voltage of 16 V between the ends of the resistor, a current of 200 mA flows through the resistor. What current will flow through the resistor when connected to 48 V?
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