SSC CGL 2025 PYQ — Question 69

The correct answer is option 1 i.e. 80.

Let numbers be a, b, c

⇒ a + b + $c\over2$ = 210 ...(1)

⇒ b + c + $a\over2$ = 198 ...(2)

⇒ c + a + $b\over2$ = 192 ...(3)

Add eq (1) + (2) + (3)

⇒ (a + b + b + c + c + a ) + ($a\over2$ + $b\over2$ + $c\over2$) = 210 + 198 + 192

⇒ 2(a + b + c) + $(a + b + c)\over2$ = 600

⇒ $5\over2$(a + b + c) = 600

⇒ a + b + c = 240

Average = $240\over3$ = 80