B is 4/3 times as efficient as A. If A can complete 5/8 of a given task in 15 days, what fraction of the same task would remain incomplete if B work on it independently for 10 days only?
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4/9.
Every day A is completing ((5/8)*(1/15)) of the given work. i.e. 5/120.
Since B is 4/3 as efficient as A then B will complete ((5/120)*(4/3)) of the given task in a day i.e. 1/18.
B will complete 10/18 of the task in 10 days.
hence task remaining would be 8/18 of the given task.
Every day A is completing ((5/8)*(1/15)) of the given work. i.e. 5/120.
Since B is 4/3 as efficient as A then B will complete ((5/120)*(4/3)) of the given task in a day i.e. 1/18.
B will complete 10/18 of the task in 10 days.
hence task remaining would be 8/18 of the given task.
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