This is the complete problem: There are 4 men in a car. Find the sum of the ages of 4 the men if their ages in all possible pairs are given as : 96, 79, 84, 95, 100, 83. Dec 15 | Abaline from Fremont, CA | 1 Answer | 0 Votes Mark favorite Subscribe Comment
a + b a + c a + d b + c b + d c + d ------ 3(a + b + c + d) 96 = 90 + 6 79 = 90 - 11 84 = 90 - 6 95 = 90 + 5 100=90 + 10 83 = 90 - 7 ---------- 6(90) - 3 = 3(a + b + c + d) (a + b + c + d) = 2(90) - 1 = 179 Dec 15 | Steve S. Comment