Question

Hai friend we have 3 groups named A B.C. Can you say how many are we in each
group
(a) Group A: We and you together is 21.
b) Group B: We and us again with you will make 21.
(c) Group C: We and us again with half of us and you will make 21​

Answer 1

Step-by-step explanation:

1. in the first situation me + you will make 21 that means you are 20.
2. in the second situation me + you +you will make 21

2 you = 20

you = 10

so you are 10

3. in this situation me + you + you+ you/2 will make 20

then

you+you+you/2= 20

2you+you/2 = 20

5you/2= 20

5 you. = 40

you = 40/5

you = 8

in this situation you are 8

Answer 2

Given : we have 3 groups named A,B,C

group A: we and you together is 21  

group B: we and us again with you will make 21

Group C: we and us again with half of us and you will make 21

To Find :  many are we in each group

Solution:

.group A: we and you together is 21

You are 1

We = Group A = A

A + 1  = 21

=> A = 20

group B: we and us again with you will make 21?

B + B + 1 = 21

=> 2B = 20

=> B = 10

Group C: we and us again with half of us and you will make 21?

C + C + C/2  + 1 = 21

=> 5C/2 = 20

=> C  = 8

Group A = 20

Group B = 10

Group C = 8

Total = 20 + 10 + 8  = 38

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