To completely dissolve a sample of silver bromide, the amount of sodium thiosulfate added to a solution must be: a. equimolar with AgBr
b. greater than the number of moles of AgBr
c. less than the number of moles of AgBr
d. impossible to predict

The simplified solubility of glucose at 30°C is 1.25 g/g of water. Considering that the density of water at 30°C is 1 g/mL, the equivalent mass of 400 mL of water is also 400g. 

The concentration of the solution in water is,
                            550 g/400g of water = 1.375 g glucose / g of water

Since the concentration is higher compared to the solubility of glucose at the specified temperature, it can be said that the solution is SATURATED.