Wait: 60 minutes in first → but hours, not minutes.
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- Then in the next [third] hour = 50 more than second hour → 240 + 50 = 290 → total 530.
- Remaining: 190 over 3 hours → 190 ÷ 3 = <<190/3=63.333>>63,333...
- But since not integer, and math problem, accept fractional? Unlikely.
- Wait: 6 hours, divided into 6 parts.
- After first 2 hours: 240 done.
- Third hour: +290 → total 530.
