Work + expression of a variable from the formula - math problems

Number of problems found: 44

  • Harvesters
    The first harvester reaps the grain from land for 24 hours, the second harvester for 16 hours. For how many hours will take harvest by two harvesters, but the second harvester started working four hours later than the first?
  • On the farm
    On the farm were housed 70 heads of cattle with food supply for 180 days. After 60 days, 10 head of cattle sold, and for the next 30 days they sold 10 more. How many days is sufficient supply of feed for the remaining cattle?
  • Garden
    Father dig up the garden in 9 hours. Son in 13 hours. How many hours take dig up the garden together?
  • Fire tank
    Whole fire tank was discharged once in 5 days by first out by second in $n days. Once firefighters pumped out 6/13 of water out from the tank and then let the water flow out both drain. How long take empty the tank?

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Work word problems. Expression of a variable from the formula - math problems.