The work done by a man, a woman and a child is in the ratio of 5: 3: 1. There are 20 men, 24 women and 40 children in a factory. Their weekly wages amount to ₹1484, which is divided in the ratio of work done by the men, women and children. What was the amount paid to 12 men, 20 women and 30 children in the February, 2017?

First calculate wage per unit: total wages ₹1484 divided by total work units (20×5 + 24×3 + 40×1 = 100 + 72 + 40 = 212) = ₹7 per unit. For 12 men, 20 women, 30 children: work units = 12×5 + 20×3 + 30×1 = 60 + 60 + 30 = 150 units. Amount = 150 × 7 = ₹1050. But this is weekly; for February 2017, we multiply by 4 weeks = ₹4200. The answer matches Option C.