OG详解-OG4 数学2 Q27

The correct answer is 600. It’s given that 210 is p% greater than 30. It follows m that 210 = (1+p100​​ ). Dividing both sides of this equation by  30  yields 7 = 1+​p100​. Subtracting 1 from both sides of this equation yields 6 = ​p100​ Multiplying both sides of this equation by  100 yields p = 600. Therefore, the value of p is 600.