Question

The class average is between 70 and 85 percent. That's a range of 15%.

Answer 1

Can you be precise in what has to be solved

Answer 2

  The class average is between 70 and 85 percent. That's a range of 15%.

Answer: The class average is 70 percent and 85percent is 15 percent.

Let’s assume the average strength of the class has 25 students

So here goes the solution:

(15*85 percent + 40*70 percent)/25

= 40.75 percent+ 15 Percent.

= 55.75 Percent