ary1 = [1, 2, 3, 4, 5]
ary2 = [10, 20, 30, 40, 50]
ary3 = [100, 200, 300, 400, 500]

result = []
ary1.zip(ary2, ary3){|a, b, c|
  result <<  a + b + c
}
p result   #=> [111, 222, 333, 444, 555]