The average age of 30 students in a group is 18 years.
The average age of 30 students in a group is 18 years. When the teacher’s age is included, the average age of the group increases by 1 year. What is the teacher’s age (in years)? एक समूह में 30 विद्यार्थियों की औसत आयु 18 वर्ष है। जब शिक्षक की आयु को आयु शामिल की जाती […]
The average age of 30 students in a group is 18 years. Read More »