Answer:
21 glasses of water
Explanation:
to do this equation we must first divide 3 1/2 by 1/6
you must make 3 1/2 into an improper fraction
that is 7/2
then you can divide
when you divide fractions the second number is flipped
so 7/2 * 6/1
this becomes 42/2
then simplified and it becomes 21
21 glasses of water can be filled with 3 1/2 bottles of water