Seven years ago, the average age of A, B and C was 51 years. If A is 3 years older than B and B is 3 years older then C then the present ages of A, B and C are ( in year)
Chaparral biome is also called Mediterranean. The chaparral biome is a part of each continent and consists of various types of terrain including mountains and plains. It is often confused with the desert biome because they share many similarities such as both being hot and dry. The chaparral biome receives more rainfall per year than the desert biome.