Volume + inverse relationship - practice problems
Number of problems found: 20
- Markus painter
Markus used ¾ liter of paint to cover 10 ½ square meters of wall. How many liters of paint is needed to cover 12 ¼ square meters of wall?
If 4 and a half teaspoons of baking powder are need to make 10 servings of cornbread, how many teaspoons are needed to make 25 servings?
- Petrol as fuel
A car can travel 480 miles on a full tank of petrol. The tank holds 60 litres. The fuel gauge shows there are 15 litres left in the tank. How many more miles can the car travel before it runs out of petrol?
- A family
A family of four consumes 220 liters of water a day. How many hectoliters of water are consumed by 68 tenants per day?
From 40 liters of milk is produced 8 kg of cheese how many liters of milk are needed to produce 2 kg of cheese?
680 liters of water were pumped in 8 minutes. How many liters was spent in 56 minutes?
- Five inlets
The tank can be filled with five equally powerful inlets. If the tank is filled by four of these inlets, it takes a total of 30 minutes to fill one-third of the tank. How many minutes does it take to fill an empty tank if it is filled with all five inlets
Seawater has a density of 1025 kg/m3, ice 920 kg/m³. 8 liters of seawater froze and created a cube. Calculate the size of the cube edge.
- Orange colour
In order for the painter to get orange, he has to mix yellow and red in a ratio of 3: 4. How many liters of orange did he mix if he used 8 liters of red?
- Cooling liquid
Cooling liquid is diluted with water in a ratio of 3:2 (3 parts by volume of coolant with 2 volumes of water). How many coolant volumes must be prepared for a total of 0.7 dm³ (liters) of the mixture?
- One deci
Wine 0,375 l costs 2040 CZK. How much does one dl cost?
- Tank No 8
Tank is filled by one inlet valve with a flow rate of 12 liters per second in 72 minutes. How long take the tank to fill, if we open half an hour after one more inlet?
- Pumps 3
Two pumps of the same power fill the garden pool for 10 hours. How many of these pumps would have to use if we want to shorten the filling of the pool to four hours?
- 4 pipes
The tank flows out by 4 pipes in 6 hours 120 hl water. How much water flows out of 5 pipes of the same diameter in 14 hours?
Calculate how many 25 kg bags of leveling concrete must be purchased if we leveling room 15 m² to the "height" 6 mm if consumtion is 1.5 kg per square meter and millimeter thickness.
- Car range
Calculate the maximum range of car, if you can spend 10 euros, price of diesel is 1.55 Eur/l and car consumption is 3 l/100 km.
If water flows into the pool by two inlets, fill the whole for 19 hours. The first inlet filled pool 5 hour longer than the second. How long pool take to fill with two inlets separately?
The water pipe has a cross-section 1087 cm². An hour has passed 960 m³ of water. How much water flows through the pipe with cross-section 300 cm² per 9 hours if water flows the same speed?
- Car range
Kia has an average diesel consumption of 3.9 liters per 100 kilometers. What is the range of the car for 179 euros if fuel costs 1.3 EUR/liter, if the tank has a volume of 55 liters?
- Engineer Kažimír
The difference between politicians-demagogues and reasonable person with at least primary education beautifully illustrated by the TV show example. "Engineer" Kažimír says that during their tenure there was a large decline in the price of natural gas, pri
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