Question 1016447
Harry is x now.
Jenny is j now.
Ahmed is a now.
j-3 = 2(x-3)  which means j = 2x - 6 + 3 = 2x - 3
In three years, 
a + 3 = 5(j + 3)
now solve for a substituting in we get
a = 5(2x - 3 + 3) - 3 = 10x - 3