Answer: 13/17
Step-by-step explanation: //Give thanks(and or Brainliest) if helpful (≧▽≦)//
In both cases, we can use a rule of three.
<h2>First part</h2>

Therefore, 4 students correspond to 20% of 20 students in total.
<h2>Second part</h2>

Therefore, 2 doctors correspond to 8% of 25 doctors in total.
1/5^-2 = 5^2 so this equals
= 25
Answer:
7(1-8n)=0
We simplify the equation to the form, which is simple to understand
7(1-8n)=0
Reorder the terms in parentheses
+(+7-56n)=0
Remove unnecessary parentheses
+7-56n=0
We move all terms containing n to the left and all other terms to the right.
-56n=0-7
We simplify left and right side of the equation.
-56n=-7
We divide both sides of the equation by -56 to get n.
n=0.125