Cleaning windows

Cleaning company has to wash all the windows of the school. The first day washes one-sixth of the windows of the school, the next day three more windows than the first day and the remaining 18 windows washes on the third day. Calculate how many windows have school.

Correct result:

n =  54

Solution:


n/6+3n/6+18=n

n/6+3•n/6+18=n

2n = 108

n = 54

Our simple equation calculator calculates it.



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