Jones is now twice as old as he was 5years ago and his mother is now 4 times as old as jones. How old is his mother now

Answer 1

Let x be Jones' age now.
Jones was x - 5 years old five years ago.
Jones is now 2(x - 5) = 2x - 10 years old.
Jones' mother is 4(2x - 10) = 8x - 40 years old.
Jones' mother is 8x - 40 years old now. Answer: \boxed{8x-40}.