Teaching DSSSB PRT Special Educator Mock Test Quantitative Aptitude Time and Work Work Efficiency

A and B together can complete a piece of work in 36 days while B and C together can do it in 20 days. The efficiency of C is thrice the efficiency of A. B alone can complete two-third of the original work in

1
30 days
2
45 days
3
36 days
4
40 days
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