Sum of the two numbers is 21 and their difference is what is the half of the greater number ?
সমাধান
সঠিক উত্তর: Option A
Let greater number is x
smaller number is y
x+y=21.........(1)
x-y=7............(2)
from 1 and 2
we got,x=14
half of the greater number is 14/2=7
