Workhorses

A team of colleagues done the work in 20 days. After adding 2 colleagues from the beginning the work was completed in 15 days. How many members has the colleague team?

Correct result:

n =  6

Solution:


20n=15(n+2)

20•n=15•(n+2)

5n = 30

n = 6

Our simple equation calculator calculates it.



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