A person walking 5/6 of his usual rate is 40 minutes late. What is his usual time?

A person walking 5/6 of his usual rate is 40 minutes late. What is his usual time? Correct Answer 3 hours 20 minutes

Let, usual time is t and usual rate is 1 unit. According to Question ⸫ 1 × t = 5/6 (t + 40) ⇒6t = 5(t + 40) ⇒t = 200 minutes. ⸫ 3 hrs 20 minutes.
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