Time + simple proportion - practice problems
Number of problems found: 138
- A ration
108 kg of ration is sufficient for 18 students for 15 days. Find, for how many students will 70 kg of ration be sufficient for 25 days? - A woodcutter
A woodcutter took 12 minutes to make 3 pieces of a block of wood. How much time would be needed to make 5 such pieces? - Constant speed
At a constant speed, a train travels 45 miles in 60 minutes. At this rate, how far does the train travel in 12 minutes? - Secondary 5
Secondary Middle School has 1200 students. Each student takes 5 classes a day. Each teacher teaches 4 classes. Each class has 30 students and 1 teacher. How many teachers are there at Secondary Middle School?
- Glue strength
At 40°C, it takes 3 hrs to get 125% glue strength. How long does it take to get 100% at 50 ˚C? The higher the temperature, the faster it cures the glue. - Sami received
Sami received a salary of € 73.50 for 7 hours. How much would the salary have been in 8 hours? - Ruel cut
Ruel cut the grass on 1/5 of a hectare in an hour. How long will it take him to cut the grass on 3/4 of a hectare? - Employees 16
There are 3 full-time employees in your office for every 5 who are part-time. If there are 25 part-time employees, how many full-time employees are there? - The distance 3
The distance covered by car in 1 hour is 38 1/2 km. Find the distance it will cover in a) 3 1/2 hours, b) 5 hours.
- Three chefs
Let's say you have 3 Chefs that have made 14 cakes in 8 hours. Assuming they are working at the same efficiency, how many hours does it take 10 Chefs to bake 24 cakes? (Rounded to the nearest hour) - Minutes 83730
In one minute, 3 and 1 and a half liters of water flow out. How many liters of water will flow out in 2 and 1 half minutes? - Families 83209
Coal for 15 families lasts 60 days. How many days will the coal last for 20 families? - Containers 82736
Two filling machines fill 250 containers in 2 hours. How many containers will 4 machines fill in 3 hours? - Railings 82711
Seven part-timers paint 280 m of railings in 5 hours. How many meters of railing will nine part-timers paint in 4 hours?
- Harvested 82548 Farmers harvested 1110q of grain from 37 hectares of wheat. a) how many q of wheat did they harvest from 12 hectares? b) how many grains were harvested from 1 m². C) how big is the side of the square of the field from which they harvested 1q of wheat?
- Describes 82518 The minute hand describes an angle of 180 degrees in half an hour. In how many minutes does the minute hand cover an angle of 192 degrees?
- Powerful 82250
In 5 minutes, it pumps 1240 l of water with the pump. Can two equally powerful pumps pump 500 liters of water in 1 minute? - Construction 82214
At the construction site, the sand that belongs to the mortar is sifted through a sieve. At the same time, 1/6 of the coarse sand falls through. Determine how many m³ of sand must be brought in to obtain 2 m³ of sifted sand. - Operation 82150
In 24 hours, the engine consumes 346 I of gasoline. How many liters does it consume in 126 hours of operation?
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