Answer:
Answer is A.
Step-by-step explanation:
Mass of Sodium Chloride in one 50kg person =
grams
Mass of Sodium Chloride in
50kg people =
* 
=
=
So the Answer is A.
Answer:
25
Step-by-step explanation:
So,
Normally a unit rate will be x per 1y. Example: 60 miles/1hr.
Therefore, the option with the denominator as 1 would be the unit rate.
The correct option is C.