A half of what john's age was 4 years ago is equal to one third of what it will be in 5 years' time. How old is john now?

The center of the circumscribed circle lies on line segment and the longest side of the triangle is equal to the of the circle.

Cody was 165cm tall on the first day of school this year, which was 10% taller than he was on the first day of school last year.

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