Simple math problem but solution sometimes give 25?

ChatGPT Use cases and examples
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A visual puzzle depicting equations using icons of earphones, a person, and smartwatches, asking to find an unknown value. (Captioned by AI)
A visual puzzle depicting equations using icons of earphones, a person, and smartwatches, asking to find an unknown value. (Captioned by AI)698×728 27.5 KB

Screenshot_2025-03-05-09-23-44-90_e2d5b3f32b79de1d45acd1fad96fbb0f
Screenshot_2025-03-05-09-23-44-90_e2d5b3f32b79de1d45acd1fad96fbb0f934×1027 118 KB

Second image contains solution but sometimes it gives me 25 as solution