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.
I'm not sure exactly which race you're referring to, but in the "match
race of the century", Sea-biscuit raced against a horse named War
Admiral.
The misplaced modifer is in answer C: She called for help at the top of her voice, not the corner.
