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NASA's Lucy spacecraft successfully completed its first flyby of an asteroid named Dinkinesh It is a first-of-its-kind mission of NASA that will explore Jupiter’s elusive Trojan asteroids. Over its 12-year mission, Lucy will explore a record-breaking number of asteroids: it will fly by two in the belt of asteroids that circle the Sun between the orbits of Mars and Jupiter, and then 10 Trojans, which includes five asteroid targets and the satellites of three of those
The average age of 18 children and their teacher's age are 15 years. If the teacher's age is excluded, the average reduces by 2. What is the teacher's age?