Sofia is making a batch of slime using a recipe that includes glue, water, and a salt solution. She uses 7.5 fl oz of glue. The amount of glue is 12.5 times the amount of salt solution. There are 4.2 less fluid ounces of salt solution than water. How many fluid ounces of water does Sofia use to make the batch of slime?

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