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?

Q: 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 + 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

A
B
C
can't be determined

Correct Answer: A

Explanation:

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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