A, B and C together can finish a task in 12 days. A is twice

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SSC CGL Tier-2 21-February-2018 Maths
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A, B and C together can finish a task in 12 days. A is twice as productive as B and C alone can do the task in 36 days. In how many days can A and B do the task if C goes on leave?

[SSC CGL Tier-2 21-February-2018 Maths]

A 10

B 20

C 15

D 18