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Alik [6]
3 years ago
5

15% of the students in Mrs. Madison’s math classes have an ‘A’. If 18 students have an ‘A’, how many students are in Mrs. Madiso

n’s math classes? [Type your answer as a number.]
Mathematics
2 answers:
natita [175]3 years ago
6 0
120 .
_________________________________
<span>Explanation: 
_______________________________________________
15% of x = 18 ;  x = total number of students.
_______________________________
Solve for: "x" ; which is our answer.
____________________________________

15 % of x = (15/100) * x = (0.15)x ;
 _______________________________

(0.15) x = 18 ; 

Divide each side by: "(0.15)" ; to isolate "x" on one side of the equation; and to solve for "x" , which is our answer:
_________________________________

</span>(0.15)x / (0.15) = 18 /(0.15) ;
 _____________________________
   x = 120 ;  They are 120 students in Mrs. Madison's math classes.
___________________________________
The question asks to type the answer as a number. So:
______________________________
120 .
_____________________________
Vikentia [17]3 years ago
4 0

Answer:

120 .

_________________________________

Explanation:

_______________________________________________

15% of x = 18 ;  x = total number of students.

_______________________________

Solve for: "x" ; which is our answer.

____________________________________

15 % of x = (15/100) * x = (0.15)x ;

_______________________________

(0.15) x = 18 ;

Divide each side by: "(0.15)" ; to isolate "x" on one side of the equation; and to solve for "x" , which is our answer:

_________________________________

(0.15)x / (0.15) = 18 /(0.15) ;

_____________________________

  x = 120 ;  They are 120 students in Mrs. Madison's math classes.

___________________________________

The question asks to type the answer as a number. So:

______________________________

120 .

_____________________________

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