An aeroplane took off from Kuala Lumpur airport at 1400 hours and arrived at New Delhi airport at 1830 hours. Calculate the duration of the journey in minute and second?
Solution:
Duration, t = 1830 – 1400 = 4 hr 30 min
t = (4 x 60 minutes) + 30 minutes
= 240 + 30 = 270 minutes
and, t = 270 min x 60 s = 16 200 s
1 min