If in train-R 34 percent of the passengers are females and 26 percent are children, what is the number of males in that train ?

Number of passengers in train-R

$=\frac{8500 \times 9}{100}=765$

∴ Number of males = 765 dk (100 – 34 – 26)%

$=\frac{765 \times 40}{100}=306$