To clarify your doubt,
If each boy gives 1/4 of his share, all the boys also give 1/4 of their share. There is no confusion about each and total.
This is an open platform.
Everyone of us can present the answer in one’s own way, provided it is logical and correct.
It would be nice that each one could spend some time on answer presenting rather commenting on others.
We would not want this platform become a warfield.
Khong Pek Mao