Question
Tim arrived at the computer room at 9.30 a.m.. He did his first activity for 50 min and spent the rest of the time on the second activity. He left the computer room at 10.35 a.m.. For how long did he spent working on the second activity in the computer room?
4 m

Click button first when a symbol is required. X

Tim arrived at the computer room at 9.30 a.m.. He did his first activity for 50 min and spent the rest of the time on the second activity. He left the computer room at 10.35 a.m.. For how long did he spent working on the second activity in the computer room?