Question

answer for this question ​

Answer 1

Answer:

please write the question properly

Answer 2

Step-by-step explanation:

(a) in group A

let assume x + 1 =21

so, x = 21-1

x = 20 members

(b) in group B

let assume x + x + 1 = 21

2x + 1 = 21

2x = 21-1

2x =20

so, x= 20/2

x= 10 members

(c) in group C

let assume

x + x - x/2 + 1 =21

2x - x/2 + 1 = 21

by doing LCM

(4x - x + 2)/2 = 21

(3x + 2 )/2 = 21

3x + 2 = 21multiply with 2

3x + 2 = 42

3x = 40

so, x= 40/3 members