Three men A, B and C working together can do a Job in 6 hours less time than A alone, in 1 hour less time than B alone and in one half the time needed by C when working alone.Then A and B together can do the Job in

Three men A, B and C working together can do a Job in 6 hours less time than A alone, in 1 hour less time than B alone and in one half the time needed by C when working alone.Then A and B together can do the Job in
1). $\frac{2}{3}$ hour
2). $\frac{3}{4}$ hour
3). $\frac{3}{2}$ hour
4). $\frac{4}{3}$ hour

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