Mr. Sharrone can paper a room in 2 hours His assistant needs 6 hours. If Mr. Sharrone works 1 hour and then his assistant completes the job alone, how long will

Question

Please explain how I should solve the problem thanks 

Answer 1

In his hour Mr. Sharrone papers half of the room (he works 1 out of 2 hours)

The assistant needs 6 hours to paper the room, yet only half the room remains.

The assistant needs 3 hours.