Direct relationship - practice for 12 year olds - page 12 of 18
Number of problems found: 347
- Change the numbers in the ratio
Change the numbers 29, 38, and 43 in a 3:4 ratio. - Runner 2
Marian runs 12 meters in 8 seconds. How far would Marian run for 70 seconds if he still runs at the same pace? - Unknown number 5
Daniel thinks of an integer. When he change this number at a ratio of 2:5, he got the number 2.8. Determine what number Daniel thinks. - Painting rooms
If Daniel paints for three hours daily, he completes it in 7.5 days. How many hours a day would he have to work to finish the job 1.5 days earlier?
- Good swimmer
A good swimmer swims 23 m distance with ten shots. How many shots does he swim to an island located at 81 m if he still swims at the same speed? - Sugar
From 3 tons of sugar, beet produced 480 kg of sugar. How many tons of sugar was produced from 17.5 tons of sugar beet? - Distance 3575
The distance between the two cities is 25km. This distance was drawn on the map by a line 5 cm long. What is the scale of the map? - Smokovec 3565
On a tourist map with a scale of 1:20 000, the distance between Starý Smokovec and Nový Smokovec is 24 cm. What is the actual distance? - The sidewalk
The sidewalk is 50 m long. What will the length of the plot plan be on a scale of 1:200?
- Distance 3528
The direct distance between Prague - Moscow is 1680 km. How far apart are these cities on the scale map 1:4000000? - Small city
The length of the street is 230 m. What will its image length be on the plan at a scale of 1:2500? - Department 3500
The city plan has a scale of 1:5 0000, which determines the actual dimensions of a department store that has a length of 18 mm and a width of 25 mm. - Measures 3499
What is the actual length of the road, which measures 5 cm on the map, if the scale is: a / 1:500, b / 1:1,000 c / 1:1,000,000? - Minutes 3475
A scribe with an average speed of 250 strokes per minute would write text in 16 minutes. How many minutes longer would she write the exact text at an average rate of 200 beats per minute?
- 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? - Supply 3464
Hay stock is enough for four horses for 60 days. How long would this supply last for ten horses? - Identical 3452
Two identical cars use 12 l of petrol to cover 150 km. How much gasoline do 25 similar cars use per 1800 km? - Many 3449
I eat four cows in 5 days and 16 bags of hay. How many bags will five cows eat in 5 days? - Chocolates 3448
If we pay 1.40 euros for two chocolates, how much will we pay for five chocolates?
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