A + B = 2x then A and B complements of each other in a total of 2x
Let B = 40% of 2x = (40 / 100) * 2 x = 0.8 x
then A = 60% of 2x as both percentages will add to 100%
= (60/100) * 2x = 1.2 x
You verify by adding A & B. They will total to 2x.
we have A = 10. Then 1.2 x = 10 Then x = 10/1.2 = 100/12 = 8.333....
