Question

the Mean of 10 numbers is 7 and the mean of 15 other numbers is 12.find the mean of 25 numbers taken together.​

Answer 1

Answer:

10_____

Step-by-step explanation:

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Answer 2

Answer:

22

Step-by-step explanation:

1. mean of 10 nos is 7

2. mean of 5 nos is 12

we can see that the mean is increasing by 5 we get the mean of 25 nos taken together as 22