Inverse relationship + work - math problems

Number of problems found: 72

  • Eight masons
    Eight masons will plaster a wall with an area of 1440 m2 in 9 days. They work 8 hours a day. How much area will plaster 6 masons in 4 hours?
  • Six students
    Two pupils painted the class in four hours. How long will it take for six pupils?
  • Blueberries
    5 children collect 4 liters of blueberries in 1.5 hours. a) How many minutes do 3 children take 2 liters of blueberries? b) How many liters of blueberries will be taken by 8 children in 3 hours?
  • Painters
    Ten painters paint the school in 20 days. How many days do four painters paint the school at the same pace of work?
  • Assembly parts
    Nine machines produce 1,800 parts on nine machines. How many hours will it produce 2 100 parts on seven such machines?
  • Seven workers
    Seven workers clear the glade in 22 hours. How many workers would need to be done in 8 hours?
  • Cook on gas
    The gas cylinder will last for 30 weekends for 2 hours of daily cooking. How many days will we be able to cook on a new cylinder when we cook for 3 hours a day?
  • The work
    The work was to be done by 150 workers. At the beginning of their work, their number reduced by 40, which increased the time of work by 5 and 1/3 of the schedule. How long did work take?
  • Pumps
    After the floods, four equally powerful pumps exhausted water from the flooded cellar in 6 hours. How many hours would take a drained out with three equally powerful pumps?
  • Hay bags
    4 cows eat 16 hay bags in 5 days. How many bags will eat 5 cows in 7 days?
  • A report
    Maricris can type a committee report in 5 hours. Jane helped Maricris, and together they finished the report in 3 hours. How long would it take Jane to complete the report she had worked alone?
  • Two diggers
    Two diggers should dig a ditch. If each of them worked just one-third of the time that the other digger needs, they'd dig up a 13/18 ditch together. Find the ratio of the performance of these two diggers.
  • Two masters
    The two masters will make as many parts as five apprentices at the same time. An eight-hour shift begins at 6 o'clock. When can a master finish the job to produce just as much as an apprentice for the whole shift?
  • Bulbs and electricity
    In the sports hall, 875 identical light bulbs light for 2 hours. How long does it take for 100 such light bulbs to consume the same amount of electricity?
  • Wood harvesting
    The harvested wood is bundled from the forest to a sawmill. The driver makes the journey four times a day, and the work takes him 8 days. How many times would he have to go daily to get the job done 2 days earlier?
  • Five pumps
    The water tank is filled with two pumps in 48 minutes. How long would it take to fill it with 5 same pumps?
  • Twelve
    Twelve students work on a week forestry brigade. One hundred spruces will receive x CZK, one hundred pine y CZK. How many receive each one students did in one day if they planted a total of 25,000 spruces per week and 30,000 pine trees? Express by express
  • Sick
    Six seamstresses should make 60 shirts in five business days. After three days two seamstresses were sick. How many days have the remaining seamstresses to finish contract?
  • Two workers
    Two workers should fulfill certain task together for 5 days. If the first worker increased their performance twice and second twice fell, it took them just four days. For how many days would handle the entire task first worker himself?
  • Three workers
    Three workers got paid for work. First earn € 50, the second € 100 and third € 60. For further work, we should receive together € 735. How do you divide that amount to be distributed in the same proportion as the first job?

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Inverse relationship - math problems. Work word problems.