Anil can do a work in 15 days while Sunil can do it in 25 days. How long will they take if both work together?

Question:Anil can do a work in 15 days while Sunil can do it in 25 days. How long will they take if both work together?

1.3 4/9 days

2.8 4/9 days

3.9 3/8 days

4.6 3/8 days


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