Saturday, February 21, 2026

Smarter than me on percentages

Grok

Suppose 96% of a large group cannot solve problem P and 23% of that group has property X, what percentage of the subgroup cannot solve P. And assume that only those in the subgroup can solve P.Let the total group have 100 people for simplicity.

Number who cannot solve P: 96% of 100 = 96 people.
Thus, number who can solve P: 4 people.
Number with property X (the subgroup): 23% of 100 = 23 people.
Number without property X: 77 people.

Since only those in the subgroup (with X) can solve P, all 4 solvers are among the 23 with X.

Therefore, number in the subgroup who cannot solve P: 23 - 4 = 19 people.
Percentage of the subgroup who cannot solve P: (19 / 23) × 100% ≈ 82.61%.

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