P works twice as fast as Q. If Q alone can complete a work in 12 days, P and Q can finish the work in --- days	Choose the correct choice
A) 1 B) 2 C) 3 D) 4 E) 4.5
Work done by Q in 1 day = 1/12   Work done by P in 1 day = 2 × (1/12) = 1/6   Work done by P and Q in 1 day = 1/12 + 1/6 = ¼   =&gt; P and Q can finish the work in 4 days   Option 4
<result>D</result>
P works twice as fast as Q. If Q alone can complete a work in 12 days, P and Q can finish the work in --- days