Jessie and Mark are planning to paint the house together. Jessie thinks that if he works alone, it would take him 5hours more than the time Mark takes to paint the entire house. Working together they can complete the job in 6hours.

Question:
15. How will you solve the equation formulated? What mathematical concept and principles are going to use?

A. 11h for Mark and 15h for Jessie
B. 10h for Mark and 12h for Jessie
C. 12h for Mark and 15h for Jessie
D. 10h for Mark and 15h for Jessie

(With solution po if possible. Thank you.)