Question

in a group of children two fifth play cricket,one fifth play badminton ,one fourth play football and remaining 30 play other games.
a)how many children are there in group?
b)how many play 1)cricket 2)badminton 3)football

Answer 1

let total no. be x
so acc to situation
x- (2/5 x + 1/5 x +1/4 x) = 30
so
x - (8+4+5)x/20 = 30
x - 17/20x = 30
3x/20 = 30
3x = 600
x = 200
... now cricket --- 2/5 (200) = 80
badminton. ---- 1/5(200) = 40
football --- 1/4(200) = 50...
Hope its worth a brainliest

Answer 2

Let the total no of children be x
No of Children who play cricket =2x/5
No of Children who play badminton =1x/5
No of Children who play football =1x/4
Remaining =30
1x/4+1x/5+2x/5+30=x
5x+4x+8x/20+30=x
17x/20=x-30
17x=(x-30)20
17x=20x-600
17x-20x=-600
-3x=600
x= -600/-3
x=200
the total no of children=200
Football players =200/4=50
Badminton players=200/5=40
Cricket =2*200/5=80