Ratio - practice for 12 year olds - page 16 of 30
Number of problems found: 588
- Calculated 6501
Alenka calculated that reading ten pages of the book every day would take her 18 days. However, a week later, she decided to read 11 pages every day. How many days did it take her to read the book? - Marble bag
A marble bag sold by Rachel's Marble Company contains five orange marbles for every six green marbles. How many green marbles does it contain if a bag has 35 orange marbles? - Part-time 6476
Specify x - the number of hours if Three part-time workers, 5 hours a day, plant 900 trees. How many hours a day do two part-time workers have to work to plant 480 trees? - Determine 6467
The ratio of 2 numbers is 2:5. Determine the product of the numbers if the larger of them is 35.
- Two gardeners
The garden with an area of 81 square meters was divided by two gardeners in a ratio of 4:5. How much did the second gardener get more first? - Part-timers 6436
Five part-timers ship all goods from the warehouse in 12 days. Calculate how long it would take to bring twice as many goods out of the warehouse to part-timers if their number increased by 140%. - Calculate 6430
There are 600 pupils at the school, of which 350 are boys. Calculate the ratio (a) the number of boys to the number of girls b) the number of girls to the number of pupils at the school. - School 6429
If the ratio of boys to girls at school is 8:5, how often are there more boys than girls? - Fertilizer 6427
The fertilizer bottle says: When applying during vegetation, the fertilizer must be diluted with water in a ratio of 1:5 favor of water. Mom poured a pint bottle of fertilizer into the bucket. How many liters of water should flow in?
- Ratio of sides 2
The ratio of the side lengths of one square to another is 1:2. Find the ratio of the area of the two squares. - The farmer
The farmer had 140 sheep. For the next year, she decided to change the number of sheep in a ratio of 10:7. How many sheep would he have then? - Shorter 6384
Did we divide the line 35 cm in length in the ratio of 9:6. How much does the shorter part measure? - Two brothers
The two brothers were to be divided according to the will of land at an area of 1ha 86a 30m² in a ratio of 5:4. How many will everyone get? - Twenty-three-year-old 6317
The average age of the first five hockey players was 22 years. The coach replaced the twenty-three-year-old player with a younger one, which lowered the average age of the first five hockey players to 21 years. How old is the new player?
- Determine 6291
On the Cook Island map, the cycling trail measures 0.025m. A cyclist moving at a constant speed of 15 km/h will cover the entire trail in 2/3 hours. Determine the scale of the Cook Island map. - Helicopter 6287
On the map, at a scale of 1:1100000, the aerial distance between Martin and Brezno measures 5.5 cm. Calculate the aerial distance covered by the helicopter when it flies from Martin to Brezno and back. - Calculate 6275
A block with edges of lengths of 10 cm and 8 cm has the same volume as a cube with an edge of the length of 1 dm. Calculate the third dimension of the block. Compare the ratio of the surfaces of both bodies. - Harvested 6269
Five workers harvested fruit in 150 hours. How many temporary workers have to work to harvest fruit in 250 hours? - Production 6266
They produced a total of 7,290 light bulbs in three workshops. How much did each workshop produce when we write their production in the ratio of 2:3:4
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