First convert the time into 24hrs like 4Pm= 16, 10 Pm= 22,
Now You will get 10 Am from the question is (10,40) ,
and another point at 1pm from the question is (13,80)
So you have two points now, you will get the equation of line. from that calculate 4pm point and 8 pm point.
like that find remaining points.
If you have further query , ask again.
Hope it helps you