Direct relationship - practice for 12 year olds - page 11 of 18
Number of problems found: 347
- Smaller 4835
There are two gears in the wall clock. The larger wheel has 54 teeth and the smaller 24 teeth. How many times does the small wheel turn if the big one turns four times? - Strawberries 4785
Friends Marika and Katka decided to prepare strawberry jam together. According to the recipe, they needed 50g of sugar for 0.5kg of fruit. How many kilograms of sugar must the friends prepare if they make jam from 2.3 kg of strawberries? - Rectangular 4780
The plan of the television studio is made on a scale of 1:150. The plan has a rectangular studio measuring 5 cm and 6 cm. How many crowns will we pay to cover the studio with a floating floor if we pay 356 crowns for 1 m² of floating floor? - Map scale
What is the map's scale if 5.4 km is 72 mm on the map? - Diamond 4695
The handle is made of alloy. The alloy is in a ratio of 6 parts gold, three parts lead, and eight parts diamond. The handle weighs 24 kg. How much weight are gold and lead? - Three workers
Three workers got paid for work. First earn € 50, the second € 100 and the third € 60. For further work, we should receive € 735 together. How do you divide that amount to be distributed in the same proportion as the first job? - Candies
There are red, blue and green candies in bad. Red to green is in the 6:11 ratio, and blue to red is in the 7:5 ratio. In what proportion are blue to green candies? - Five-crowns 4655
Martin has metal coins saved up in the cash box. Crowns, two-crowns, and five-crowns. The ratio of crowns to five-crowns is 7:4, and five-crowns to two-crowns is 2:9. What is the ratio of crowns and double crowns? - Purchased 4522
Ten friends decided to go hiking. They bought food supplies for 9 days. Before starting hiking, 4 boys fell ill. How many days can the boys extend their stay if they take the purchased food supply? - Dimensions 4516
The course is 80m long and 35m wide. What will be its dimensions on a 1:500 map? - Letohrad 4396
On a map at a scale of 1:400,000, the distance between Letohrad and Prague is 4.5 cm. What speed does Dad have to go to be in Prague at 9 o'clock when he leaves at 6 o'clock, 40 minutes? - Distance 4268
The map's scale is 1:10000. What is the actual distance of 4cm on the map? - The land
The land in the shape of a square has 9 ha. How big a side will the land have at a scale of 1:5000? - Underwater 4189
The water pillar is partly embedded in the ground, partly underwater, and protrudes 55 cm above the water. The length of the part above the water to the length of the part in the water is in the ratio of 1:2. The length of the part above the water to the - Pumps
Five pumps pumped 1,800 hl of water for 3 hours. How many hectoliters of water pump same two powerful pumps for six hours? - Baking bread
When grinding 100 kg of grain, we obtain 75 kg of flour for food purposes, about 23 kg of bran, which has further use, and about 2 kg is waste. 4.5 kg of bread is baked from 4 kg of flour. a) Baker can bake how many kilograms of bread from 100 kg grain? b - Bicycle gears
The toothed wheel on the bicycle pedal has 40 teeth, and the wheel on the rear wheel has only 16 teeth. How many times does the rear wheel turn if the pedals rotate 50 times? - Gasoline
For a nearly full tank of 40 liters of gasoline, the chauffeur paid 54 euros. How many euros will it cost to go 250 km long if the car has an average fuel consumption of 7 liters per 100 kilometers? - Rails
18 m railway weighs 1260 kg. How much weighs 100 m of welded railways? - Three children
Three children eat eight chocolates in 6 days. How many chocolates do six children eat in 18 days?
Do you have homework that you need help solving? Ask a question, and we will try to solve it.