Question 1080264
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One third of the distance is {{{(1/3)*2880}}} = 960 kilometers.

The rest of the distance is 2880 - 960 = 1920 kilometers.


The time spent for 960 kilometers is {{{960/720}}} = {{{4/3}}} hours = 1 hour and 20 minutes.


The time spent for 1920 kilometers is {{{1920/880}}} = {{{24/11}}} hours =2 hours and 9 minutes (approximately).


Having this, you can answer your question.
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