Question

the+mean+monthly+salary+of+75+workers+of+a+factory+is+rupees+5680.the mean salary of 25 of them is rupees 5400 and that 30 others is rupees 5700 find themean salary of the remaining workers

Answer 1

let the salary of rest 75-(25+30) =75-55=20 be x

total average salary of 75 people= 5680

avg. salary of 25 people = 5400

avg. salary of 30 other people = 5700

total avg. salary of 55 people= 5400+5700=11100

avg salary of 20 people= 11100-5400

= 5700

hope it helps ....

Answer 2

• Total salary of 75 worker is 75×5680=426000.
• Total salary of 25 workers is, 25×5400=135000
• Total salary. of 36 worker is ,30×5700=171000.

• Total salary of above 55 worker is 306000.

1. Remaining 20 workers mean salary is (426000 - 306000)/20=6000