the average weight of 8 person ' s increases by 3.5 kg when a new person comes in place of one of them weighing 65 kg . what is the weight of the new person ?
"explanation : total increase in weight = 8 ã — 3.5 = 28 if x is the weight of the new person , total increase in weight = x â ˆ ’ 65 = > 28 = x - 65 = > x = 28 + 65 = 93 answer : option a"
add(multiply(8, 3.5), 65)