Each student carried 850 ml bottle,so:
1 student:850 ml bottle
Since there are 10 students:
[tex]10 students(\frac{850 ml bottle}{1 student})=8,500 ml[/tex]
Since the conversion:
1 L=1,000 ml
Convert:
[tex]8,500 ml(\frac{1L}{1,000 ml})=8.5 L[/tex]
Hope this helps =)
