A consulting firm charges $⁢300 per session. They decide to mark up their price by (2)/(3) If they book 25 sessions, what is the total revenue from these sessions?

A markup of 2/3 means the firm adds 2/3 of the original $300 price: (2/3) × $300 = $200. The new price is $300 + $200 = $500 per session, so 25 sessions bring in 25 × $500 = $12,500. The correct choice is $12,500.

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