Question

A saline solution used in the intravenous drips contains 0.92(W/V) Nacl in water. How many grams of Nacl are contained in 250ml of this solution.

Answer 1

(Assuming the question is for 0.92% W/V)
0.92% means 0.92g of NaCl per 100mL
So, you can extrapolate that to 250 mL with a simple conversion factor or ratio to get the answer.
What I did was simply multiply the g/100mL (0.92) by 250mL/100mL (2.5).

So 0.92 x 2.5 is 2.3

There are 2.3g of NaCl in 250mL of 0.92% saline solution.