Twenty percent of the employees in a company have managerial positions, and 25 percent of the employees in the company have MBA degrees. Among all managers, 60 percent of them have MBA degrees. What percentage of the employees is both a manager and has an MBA degree?

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