Question

The mean of three numbers is 25. The mean of other four numbers is 48. Find the mean of all the numbers.​

Answer 1

Step-by-step explanation:

$sum \: of \: three \: numbers = 25 \times 3 = 75 \\ \\ sum \: of \: other \: four \: numbers = 48 \times 4 =19 2 \\ \\ mean = \frac{75 + 192}{7} \\ \\ = 38.14$