Ahmad plans to take a journey with an airplane from Jakarta to Amsterdam through Kuala Lumpur. The following is the itenary ticket he booked:
(Ticket from Jakarta to Amsterdam)
In case of time differences in those three places, Ahmad found the following illustration:
(Time differences among 3 cities)
How long will Ahmad take in the airplane during the journey?
(Assume the time he gets in and out agree with his departure and arrival)