<PRE><B>Question 312019</B>
1/5 of students in a school have no brothers or sisters  
Lets think of it as 5/5 = 100% or 100 students
So 1/5 = 20 so 20 students in a school have no brothers or sisters
this leaves 80 students
of the remaining 80 students, 40% have 1 brother or sister
so 80 X .40 = 32
so 32 students have 1 brother or sister
what is left? 100 students minus 20 students = 80 students left then
80 students minus 32 students = 48 students left
so 48 % of students in a school have more than 1 brother or sister
</PRE>