An executive traveling at 60 km hr would arrive 10 minutes early for an appointment, whereas at a speed of 45 km hr the executive would arrive 5 minutes early.how much time is there until the appointment?

Answer 1

T = Time until app.

60*(T-10/60) = 45*(T+5/60),
60T-10 = 45T + 3.75,
15T = 13.75, T = 0.91667 h = 55 Min.