He would have to be working 17.5 to 18 days. If he works 17.5 days he would reach is goal. if he works 18 days he would be over his goal so either works.
<span> Assign variables : Let x = first consecutive even Let x + 2 = second consecutive even Let x + 4 = third consecutive even 4x = 6 + 2(x+4) 4x = 6 + 2x + 8 4x = 2x + 14 4x - 2x = 14 so your answer is 7,9and 11</span>