Roshni started her studies at half past eleven in the morning and finished at quarter to two. For how much time did she study?

552 minutes = ................. hours and ............... minutes.

Kerela express starts at 4 : 10 in the morning from Nagpur and reaches Tiruvananthapuram at 14 : 15 the next day. How much time does it take to travel from Nagpur to Tiruvananthapuram?

Roshni needed 1 hr. 30 min. to travel from Nagpur to Wardha. She took rest for 15 min. She completed Wardha to Yavatmal distance journey in 1 hr. 50 min. If Roshni had started from Nagpur at 10 in the morning then at what time will she reach Yavatmal?

12 hours 18 min. – 6 hrs. 45 min. = how much?