To increase an amount by 12.5% what single multiplier would you use

Let u = {q, r, s, t, u, v, w, x, y, z} a = {q, s, u, w, y} b = {q, s, y, z} c = {v, w, x, y, z}. list the elements in the set.a ∩ (b ∪ c)a) {q, s, w, y}b) {q, y, z}c) {q, s, u, w, y, z}d) {q, r, w, y, z}

Zack and tia played chess for 50 min they put the chessboard away at 11: 20 when did they start

Complete this sentence with the best of choices given