According to the question, Total profit earns by keshav = Investment × time =2×5x=10x Total profit earns by Surjeet =3×6x=18x Total profit earns by Thomas =4×9x=36x Difference of share of profit of Keshav and Surjeet =₹7264 ⇒18x−10x=7264 ⇒8x=7264 ⇒x=₹908 Total Profit after 20% spent on maintenance and office =10x+18x+36x=64x =64×908=₹58112 80% of Total profit =58112 ∴ Total profit =