The average weekly payment to 75 workers in a factory is Rs.5680. The mean weekly payment to 25 of them is Rs.5400 and that of 30 others is Rs.5700. Find the mean weekly payment of the remaining workers.
Total salary of 75 workers =₹5680×75=₹426,000
Total salary of 25 workers =₹5400×25=₹135,000
Total salary of 30 workers =₹5700×30=₹171,000
No. of remaining workers =75−(25+30)=20
Total salary of 20 workers =₹(426,000−135,000−171,000)
=₹120000
∴ The mean weekly payment of the 20 workers =12000020
=₹6000
Hence, the mean weekly payment of the remaining workers is ₹6000.