Billy is 6 yrs younger than Amy. The sum of their ages is 22. How old will each one of them be in 8 yrs?

Question

x=Amy and y= Billy

Answer 1

Amy=x, therefore Billy = x+6 (since Billy is 6 yrs younger then Amy)

 

now, we know that

 

          amy's age + billy's age = 22

          hence,           x + x+ 6 = 22

                                        2x= 16

                                          x=8

after 8 years, amy = 8+8 = 16yrs

                    billy = 16 + 6 = 22 yrs