Answer:
$65
Step-by-step explanation:
20% of 65 is 13
 
        
             
        
        
        
Answer: 1) marks got by class 7 in PAT study
2) 22 and 25 respectively
3) three
4) Prachi
5) Steven
 
        
             
        
        
        
Answer:
3x + 7y > 21
Step-by-step explanation:
3x + 7y > 21
where:
x = number of field goals needed to win
y = number of touchdowns (plus extra point) needed to win
Since your team is 21 points behind and you want to win the game, not tie it, the number of field goals and touchdowns must result in a number higher than 21, not equal to or higher than. 
 
        
                    
             
        
        
        
Number of students = 9860
Total Population = 62,400
Percentage of students in the population can be calculated by:
(Number of students/Total population) x 100%
Using the values, we get:
Percentage of students = (9860/62400) x 100% = 15.80%
Thus, students constitute 15.80% of the entire population