Math, asked by Manmeet4566, 10 months ago

IF THE NO.OF STUDENTS IN ONE ROW INCREASES BY 4 THE NO OF ROWS DECREASES BY 2. IF THE NO OF STUDENTS IN ONE ROW DECREASES BY 4, THE NO OF ROWS INCREASES BY 4. FIND THE TOTAL NO .OF STUDENTS

Answers

Answered by Daviltanger
0

Answer:

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Answered by anbshaik00
0

Step-by-step explanation:

let the number of original rows and columns be x and y respectively then the total number of students is xy and it doesn't change

(x+4)(y-2)=xy

4y-2x +xy -8=xy

4y-2x=8 or

x=2y-4

(x-4)(y+4)=xy

4x-4y-16=0. (xy cancel on both sides)

x=y+4

2y-4=y+4

y=8 & x=12

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