if your asking us to write an essay for you then that's just sad
The sum of neutrons would be 55. (: I hope this helps. because if you minus the mass number by the atomic number which is always equivalent to the number of protons, you get the amount of neutrons. The amount of protons and neutrons always add up to the mass number.
After the planning committee reviews the proposal, we will make the final decision.
comma after proposal
Low supply demand stayed the same = high prices