Question

13. The mean of 6 numbers is 300. If one number is excluded then the mean becomes 280.
Then the excluded number is ...​

Answer 1

Answer:

400

Step-by-step explanation:

mean of 6 number = 300

sum of 6 number = 6×300

= 1800

mean of 5 number= 280

sum of 5 number = 5 ×280

= 1400

excluded number = 1800 - 1400

= 400

please!!!!!! mark as brainliest

Answer 2

Answer:400

Step-by-step explanation:

5=280

When one is include

=300

The difference between 300 and 280 is 20,which will effect all the five members.

Therefore the member other than five members will be:

=20*5+300=400