Question 565512
"James is 19 times as old as Bill" ___ J = 19B ___ J / 19 = B


"Frank is 30 Years younger than James" ___ F = J - 30


"In 6 Years James' age will be twice the sum of bill and Frank's ages then" ___ J + 6 = 2(F + 6 + B + 6)


substituting ___ J + 6 = 2[(J - 30) + 6 + (J / 19) + 6]


J + 6 = 2J - 60 + 12 + (2J / 19) + 12 ___ 42 = J + (2J / 19) ___ 42 = 21J / 19 ___ 38 = J