price each flow = $20 and wage per worker = ₹400
when 10 workers hired then total money paid , 400*10 = ₹4000
total revenue earned 600*20 = $12,000
When 11 workers hired then total money paid, 400*11 = 4400
total revenue earned , 650*20= $13,000
Now MR = change in TR/ additional labour hired
= 1000/1 = MR of 11th worker is $1,000
(B) option
Thank you....😊
price each flow = $20 and wage per worker = ₹400
when 10 workers hired then total money paid , 400*10 = ₹4000
total revenue earned 600*20 = $12,000
When 11 workers hired then total money paid, 400*11 = 4400
total revenue earned , 650*20= $13,000
Now MR = change in TR/ additional labour hired
= 1000/1 = MR of 11th worker is $1,000
(B) option