A can do 1/5 pice of work in 12 hrs and B can do 1/6of same piece of work in 15 hrs if they both work together how much time will they both take to complete the work
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full work is x
A done full work x/5=12;. x=60
b done full work. x/6=15;; x=90
together=1/60+1/90
=36 hour
A done full work x/5=12;. x=60
b done full work. x/6=15;; x=90
together=1/60+1/90
=36 hour
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