Question

Mean of five numbers is 20 and the mean of other five numbers is 30. Find the mean of all 10 numbers taken together

Answer 1

ans:25

Step-by-step explanation:

mean formula=sum of n number of terms÷number of terms n

mean of 5 numbers is 20,then multiply 20 with 5 which equals to 100

mean of another five numbers is 30,then multiply 30 with 5 equals to150

add 100 and 150 equals to 250

Now 5+5 =10 number of terms

Divide 250 by 10 which gives 25.If any mistakes in this please inform me.

Thank you