Question 470300
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Hi,
Let x represent the time it would take the 2 machines working together
Question states***Per minute the Equalizer
 1/22 + 1/10 = 1/x  |multiplying thru by 22*10*x so as all denominators = 1
 10x + 22x =10*22
     32x = 220
       x = 220/32
       x = 6.875 min