How much water do you add to make 12% suger syrup using 5 grams of sugar?

Ineed to know the answer to this algebra question.

1- what do you think the product of a nonzero rational number and an irrational number is? is it rational or irrational? make use of variables, the closure property of integers, and possibly a proof by contradiction to prove your hypothesis.2- why do we have to specify that the rational number must be nonzero when we determine what the product of a nonzero rational number and an irrational number is? if the rational number were 0, would it give us the same result we found in the first question?

The amount spent on food and drink by 20 customers is shown below what is the modal amount spent ?