Let a bag contain 2kg of sugar and 3 kg of salt. What percent of total is occupied by sugar?

35% 30% 50% 40%

40%

A bag contain 2kg of sugar and 3 kg of salt, Percent of sugar = $\frac{2}{2+3}$ x 100                          = $\frac{2}{5}$ x 100 = 40%