Four identical metallic objects carry the following charges: +1.6, +6.2, -4.8, and -9.4 C. The objects are

Question:

Four identical metallic objects carry the following charges: +1.6, +6.2, -4.8, and -9.4 µC. The objects are brought simultaneously into contact, so that each touches the others. Then they are separated.
(a) What is the final charge on each object?
(b) How many electrons (or protons) make up the final charge on each object?