The total of the ages of three friends today is 80 years. What was the total of their ages three years ago?

1. Each person was 3 years younger 3 years ago, totaling 9 fewer years. 2. Total ages drop by 3 multiplied by 3 = 9. 3. So total age 3 years ago was 80 - 9 = 71. _Source: Colonel Vyas SSB Mock Tests — OIR Set-1 (ssb.colonelvyas.org) — Q17._