Question

Calculate the duration of time.

(i) from 5.30 a.m to 12.40 p.m

(ii) from 1.30 p.m to 10.25 p.m

(iii) from 20:00 hours to 4:00 hours

(iv) from 17:00 hours to 5 :15 hours

Answer 1

(i) from 5.30 a.m. to 12 .40 p.m.

Duration of time from 5.30 a.m. to noon = 12 : 00 - 5 : 30 = 6 : 30 i.e 6 hours 30 minutes

From noon to 12.40 p.m the duration = 00 hours 40 minutes

Total duration = 6 hours 30 minutes + 00 hours 40 minutes

= 6 hours 70 minutes

= 6 hours + (60 + 10) minutes

= 6 hours + 1 hr 10 minutes

= 7 hours 10 minutes

∴ Duration of time from 5.30 am to 12.40 pm = 7 hours 10 minutes