16 because 40-12=28 and Samad will be 28 on 16 years. In 16 years his father will be 56 which is double of 28.
the value is
1.2r-11.3r=40
-10.Ir=40
r=40/-10.1
r=-0.2525
hope this helps :):):)
Intersect at where x=x and y=y
see where they have the same x and y values
that is at x=-1 and y=-5
intersect at (-1,-5)
It's either 1050 or 1.050 if that was suppose to be a decimal or a comma after the eight
