hend : shreif : khaled
3 : 5 : 7
So hend has share from total = 3/15 = 1/5
shreif has share from total = 5/15 = 1/3
khaled has share from total = 7/15
But hend share is (1/5) = 24
So total share is (5/5) = 24*5 = 120
shreif share is (1/3) = 120* 1/3 = 40
khaled share is (7/15) = 120 * 7/15 = 56