Installation 4123

The team of installers is to carry out the installation in 20 days. By adding two fitters from the beginning of the work, the assembly was completed in 15 days. How many were on the team?

Correct answer:

n =  6

Step-by-step explanation:


n·20 = (n+2)·15

5n = 30


n = 30/5 = 6

n = 6

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