750 points. The college entrance examination knowledge network shows that the total score of Chinese, mathematics and foreign languages in Taizhou college entrance examination is 150, which is included in the total score of candidates according to scores, and the selected subjects are given points according to grades, with each subject being 100. Determine the grades according to the proportion announced in advance, with a difference of 3 points for each grade, a starting point of 40 points, and 750 points for candidates.