Answer: 20 cups can serve to 20 children
Explanation:
Since we have given that
Number of pints of milk that jug holds = 10
We need to find the number of cups of milk served to each child.
Since 1 cup =8 fluid ounces
1 pint = 16 fluid ounces
So, 10 pints = 10×16 = 160 fluid ounces
And,

Hence, 20 cups can serve to 20 children.