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xenn [34]
3 years ago
6

Mike, an experienced bricklayer, can build a wall in 3 hours, while his son, who is learning, can do the job in 6 hours. How lon

g does it take for them to build a wall together?
Mathematics
1 answer:
Tatiana [17]3 years ago
8 0

Answer:

  • 2 hours

Step-by-step explanation:

<u>Mike's speed:</u>

  • 1/3 wall in an hour

<u>Son's speed:</u>

  • 1/6 wall in an hour

<u>Speed of both together:</u>

  • 1/3 + 1/6 =
  • 2/6 + 1/6 =
  • 3/6 = 1/2

They can build 1/2 wall in an hour

or

Build a wall in 2 hours

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