Question

in a school, 4 /9 of the students are boys and the number of girls is 775.find the number of boys in the school. answer is 620 bt how

Answer 1

 let strength of school is 9/9, then boys =4/9 and girls=5/9
5/9=775 then 775*9/5=1395 Total strength=1395 *4/9