Question

Ajay can plough a field in 16 hours where Vijay can plough the same field in 24 hours Ajay beings to plough the fields at 9 a.m. if they work in streets on one hour alternately when will the ploughing to completed?
1)next day 9am
2)that day 9 pm
3) that day 4 pm
4) next day 4 am
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Answer 1

Next day 4 pm sinth right answer
Mark me as brainlliest