Elapsed Time Solve for Start Time

Kyra is attending a wedding that is 1 hour and 15 minutes away from her house. She needs to arrive at the wedding at 4:00 p.m. At what time does Kyra need to leave her house to arrive at 4:00 p.m.?

Ali started his online Arabic language class at 1:15 pm. If his class and homework together lasted 2 hours, what time did Mustafa, who was waiting for Ali to finish his homework, know that they could play football together?

• 1:15 pm

• 11:15 pm

• 2:15 pm

• 3:15 pm

Ali started baking a cake for his sister Aiza's birthday party at 9.40 am.

He finished baking at 11 am.

How long did he take to bake the cake?

• 20 min

• 1 h 20 min

• 2 h 20 min

Mustafa and Hanan planned to meet at the library for a study session and Mustafa reached there at 2:30 PM. He spent 2 hours on the road.
What time did Mustafa start his journey?

• 9:30 AM

• 9:30 PM

• 12:30 PM

• 6:30 AM

Jack ran a marathon in 2 hours and 17 minutes. He crossed the finish line at 10:33 a.m. What time did the race start?

Sharon was at church for 2 hours.  She left at 1:00 pm.  What time did she get there?

• 11:00 pm

• 3:00 pm

• 11:00 am

• 3:00 am

Marci was babysitting for her cousin. Her cousin was gone for 3 hours and 40 minutes. Marci left at 9:57 p.m. What time did she start babysitting?

Gabi has been watching TV for 26 minutes. It is now 5:48. What time did she start watching? (a)  

• A. 5:22

• B. 5:27

• C. 5:35

• D. 6:12

Sarah finished watching TV at 5:50. If she had been watching it for 1 hour and 40 minutes, what time was it when she started?

• 6:30

• 6:10

• 4:10

• 4:30

Becky is meeting her friend at the library at 12:45 p.m. It takes her 25 minutes to get to the library. What time will she need to leave her house to arrive on time?