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4 years, 1 month ago
4 years, 1 month ago
2 days.
A takes 30 days for full work
B takes 25 days for full work
LCM is 150.. so assume total work is 150 units
A does 5units/ day
B does 6u/ day
10 days together ==> 110 units. pending is 40 units which C completes in 4 days. C therefore does 10u/days/
28% of 150 is 42 units.. total units by ABC in a day is 6+5+10= 21..
so days is 42/21 =2 days
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