Four workers

Four workers lay 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?

Result

t = 6:40 h

Solution:

4•6 = 4•1 + 3•t

3t = 20

t = 20/3 ≈ 6.666667

Our simple equation calculator calculates it.

Try another example

Showing 0 comments:

Next similar math problems:

• Unknown number
  Identify unknown number which 1/5 is 40 greater than one tenth of that number.
• Simple equation
  Solve for x: 3(x + 2) = x - 18
• Equation
  Solve the equation: 1/2-2/8 = 1/10; Write the result as a decimal number.
• Eight years ago
  The son asks his father how old he is. My father said: In ten years, I will have twice as much as I had eight years ago.
• Sprayers
  The vineyard can be sprayed first sprayer in 5 hours and with the second in 8 hours. How long would it take if we use sprayers both at once?
• Seven
  Seven dwarfs will cut 420 stumps in 15 hours. After five hours, the two dwarves disappear discreetly. How many hours will the remaining dwarves complete the task?
• Two machines
  The first machine can produce parts in 24 hours, the second in 16 hours. The first started working in the morning at 6:00 pm. Second at 10:00 o'clock. At what hour were all parts made?
• Pumps A and B
  Pump A fill the tank for 12 minutes, pump B for 24 minutes. How long will take to fill the tank if he is only three minutes works A and then both pumps A and B?
• Novak
  Novak needed to dig up three of the same pit in the garden. The first pit dug father alone for 15 hours. His second dig son helped him and it did that in six hours. The third pit dug son himself. How long it took him?
• Dwarfs
  Four dwarfs would prepare firewood for Snow White in580 minutes. After an hour and a half they recruit friends so that finished preparing the wood for 280 minutes. How many dwarfs they recruited?
• Work together
  Two bricklayers plastering a wall. The first would plaster it in 8 hours, the second in 12 hours. How many hours will they be done with the work if they work together?
• Proportion
  write the following proportion 8 is to 64 as to 2 is to x
• Construction of road
  For the construction of the road dam, it is supposed to transport six trucks a total of 18 days. After three days, two more cars were sent to the construction site. How long will it take to carry the material?
• Working together on project
  Two employees working on the project. First make it alone for 20 days the second for 24 days. How many days will take to complete project if 5 days they work together then first will take two days holiday and after returning they completes a project toget
• One press
  One press will produce one truck of respirators in 3.5 days. The second in 10 days. How long does it take to fill a truck while working together?
• 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?
• Insulation
  Two workers insulate the house in 5 days. After the first day of working together, only one worker continue to cover the house. In how many days will the house be insulated if every worker has the same tempo of work?