Question

answer the above question with steps perfectly​

Answer 1

Answer:

Let the number of boys in the class be x

Then the number of girls in the class = 60-x

money contributed by the boys = x(60-x)

= 60x-x^2

money contributed by the girls = x(60-x)

= 60x-x^2

money contributed by the class = 120x-2x^2

120x-2x^2 = 1600

2x^2-120x+1600 =0

x^2-60x+800 =0

x^2-40x-20x+800 =0

x(x-40)-20(x-40) =0

(x-40)(x-20)

x= 40 (or) x= 20

Boys = 40 or 20

Girls = 20 or 40