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
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4 days
Step-by-step explanation:
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
=> P and Q can finish the work in 4 days
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