To solve this we first of all need to find the distances travelled by both Vaimiti and Jabril and then we will find their difference...
Let's start solving ~
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Distance covered by Vaimiti ⤵️

Vaimiti's speed = 1.1 m/s
Time taken by her = 25 minutes = 25×60 = 1500 seconds



Distance covered by Jabril ⤵️

Jabril's speed = 1.3 m/s
Time taken by her = 30 minutes = 30×60 = 1800 seconds



Difference between distances travelled by them↯
Distance travelled by Vaimiti = 1650 m
Distance travelled by Jabril = 2340 m


➪ Therefore, The difference between distance travelled by them is 690 meter...~