A man will be (x+10) years old in 8years time. As at today, he is x + 2 years of age. The man was 63 years old 2 years ago, so he is 63+2=65 now. 8 years from now, he will be 65+8=73. He will be (x+10) years old when he is 73. So x+10=73 x=73-10=63