How to solve

Me with this one question, and i'll upvote the brainliest answer

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

Ron has 8 caps and 4 of his caps are blue. thes rest of his cap are red. how many of ron's caps are red