two identical metallic ball spherical shells A and B charges 4Q and -10c are kept a certain distance apart a third uncharged sphere C is first placed in contact with sphere A and then with sphere B the sphere B are bought in contact and then separated find the charge on sphere A and B

Answer 1

after AC contact, both have charge 2Q.
Then CA, so both leave with Q charge.
Then I don't know what <hen with sphere B the sphere B are bought in contact> means.
The issues is, both spheres brought in contact gives each the same average charge.

Answer 2

-Q each

Answer 3

Both are of same charge that's why they are pushing each other or get separated

Answer 4

A=C A+C /2 =2Q
B=C B+C/2=-4Q
A=B A+B/2= -Q