FYI: With the second son being S, and the eldest son being FOUR TIMES OLDER than the second son (S), the ELDEST son would be 4S + S = 5S, or

FIVE TIMES THE SECOND SON'S age. I think this has been "preached" on this site many, many times over, but still seems to be falling on "deaf ears."

It's EXTREMELY STUPID to create a problem such as this that reads: FOUR TIMES OLDER when in fact it should be FOUR TIMES AS OLD. It irks me to see

these stupid problems, and I hope one day that whomever is creating them will DESIST from doing so. 

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