A garments factory employs 3 categories of workers K, M and N. The efficiency of the 3 categories of workers to do a specific task is in the ratio of 3 : 5 : 6 respectively and the factory employs 15 of category K, 12 of category M and 3 of category N. If the total wages paid to the entire group of 30 workers is Tk. 492 per hour, what will be the wages earned by a category N worker for an 8-hour day?

Correct Answer: Tk. 72
Let, efficiency of K,M,N = 3x,5x & 6x So, efficiency of 15 (k) ,12(M) & 3(N) worker respectively 45x,60x & 18x Ratio = 45x:60x:18x = 15:20:6 , 3 worker of category N got in 1 hr = 6/(15 + 20 + 6) = 6/41*492 = 72, 3 wrker 1 hour = 72 tk , 1 worker 1 hour = 72/3 = 24 tk 1 worker 8 hour = 24*8 = 192 tk