When A B and C are deployed for a task A and B together do 70 of the work and B and C together do 50...........

Quantitative Aptitude (CGL) Time and work

When A, B and C are deployed for a task , A and B together do 70% of the work and B and C together do 50% of the work. who is most efficient?

A or B

A + B= 70%
B + C =50%
[? (A+B)+(B+C)−(A+B+C)= B]
=> B= 20% A= 50% and C=30%
Hence A is most efficient

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