*Solve the following proportions:*

*The) B) *

*ç) **d) *

*and) f) *

* g) *

*h) Knowing that x + y = 42, determine x and y in proportion *.

*i) Knowing that a + b = 55, determine a and b in proportion *.

*j) The sum of the age of the father and son is 45 years. The age of the father is to the age of the child, just as 7 is to 2. Determine the age of the father and son.*