Question

john had 6/13 hour time. He spent 2/5 of his free time in cleaning his room . how much time he spent in cleaning his room.

Answer 1

John spent time in cleaning his room
= 2/5 of 6/13 hour
= 2/5 × 6/13 hour
= 12/65 hour
= 12/65 × 60 ×60 sec
= 12×12×60/13 sec
= 8640/13 sec
= 664.61 sec