Work + simple proportion - math problems

Number of problems found: 41

  • A lot of hay
    Martin's grandfather weighed a lot of hay and calculated that for 15 rabbits, it last in 100 days. How many days will this lot be enough for 25 rabbits?
  • 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?
  • Painters
    Ten painters paint the school in 20 days. How many days do four painters paint the school at the same pace of work?
  • 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?
  • Four workers
    Four workers lay on the gym floor in six hours. After an hour of working together, one of the workers went to the doctor. How long will it take for the remaining three workers to complete their work?
  • Lumberjacks
    Fifteen lumberjacks would take 12 days to destroy the broken trees. How many days would this work require if 5 workers added to it after 4 days?
  • Ten cashiers
    Ten cashiers are open at Tesco. Customers wait an average of 15 minutes. How many other cashiers have to open to reduce the waiting time by 4 minutes?
  • Five mechanics
    Five mechanics will make a car for some time. How many cars can 30 mechanics produce at the same time?
  • 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?
  • Inlet and outlet
    The pool has a capacity of 50 hl. The inlet pipe flows in 1 minute 1.25 hl, and the waste pipe outlet is draining the full pool in 50 minutes. How long will it take the empty the full pool when both the inlet and outlet are opened at the same time?
  • 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?
  • Painting rooms
    If Dano paints three hours daily, he complete in 7.5 days. How many hours a day would have to work to finish the job 1.5 days earlier?
  • Pumps
    Four identical pumps fill the tank in 40 hours. How many pumps would we have to use if we wanted to save 8 hours?
  • Working time
    At 10 hours work shift, work is done in 16 days. How many days will the work be done at 8 hours shifts?
  • Painters
    Five painters painting the fence for eight days. How many days over will take work if paint the fence only four decorators?
  • Tractors
    Six tractors plowing the field for 8 days. After two days, two tractors broke down. How many days were prolonged work in the field?
  • Water inlets
    Inlet valve with a flow rate of 12 liters per second is filled tank for 72 minutes. How long take to fill full tank if we open one more such valve half an hour after?
  • Supermarket cashiers
    When at the supermarket are opened only 2 cash people waiting in the front approximately 12 minutes. How many will shorten the average waiting time in a front where supermarket open another three cashiers?

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Work word problems. Simple proportion - math problems.