Yoga is an ancient practice which is a form of meditation and exercise. By practising yoga, we not even make our body healthy by also achieve inner peace and calmness. The International Yoga Day is celebrated on 21st of june every year since 2015.
To promote Yoga, Green park society in Pune organised a 7-day Yogaa camp in their society. The number of people of different age groups who enrolled for this camp is given as follows:

Based on the above, find the following:
(a) Find the median age o people enrolled for the camp
(b) If x more people of age group 65-75 had enrolled for the camp, the mean age would have been 50. Find the value of x.