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ATQ, Efficiency of creators 'P' = (32/8) = 4 short videos/minute Efficiency of creators 'Q' = (36/6) = 6 short videos/minute Efficiency of creators 'R' = (20/4) = 5 short videos/minute Work done on first minute = (4 + 6) × 1 = 10 short videos Work done on second minute = (6 + 5) × 1 = 11 short videos Work done on third minute = (4 + 5) × 1 = 9 short videos So, the work done on first three days = 10 + 11 + 9 = 30 short videos ATQ, Total time taken in video creation = (450/30) × 3 + (9/10) × 1 = 45 + 0.9 = 45.9 minutes
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