You are picking up lumber at a lumber yard for a construction project. In addition to the ten (10) boards you already have, you purchase thirty-five (35) more and receive two (2) extras for customer loyalty. How many boards do you have after the purchase?

Amountain climber starts a climb at an elevation of 453 feet above sea level at his first rest stop he has climbed 162 feet and by his second rest stop he has climbed another 207 feet its getting late in the day so the climber starts his way down if the climber desends 285 feet how much does he need to ascend or descend to return to the original starting point