NCERT Exemplar Solutions
Class 7 - Mathematics - Unit 3: Data Handling - Problems and SolutionsQuestion 67
Class 7 - Mathematics - Unit 3: Data Handling - Problems and Solutions
Question. 67
The mean of three numbers is 10. The mean of other four numbers is 12. Find the mean of all the numbers.
Answer:
11.14
Detailed Answer with Explanation:
Sum of first 3 = 30, sum of next 4 = 48. Total = 78. Mean = 78/7 = 11.14.