Question

mean of the numbers 71, 78, 75,80, a,b is 80.
Find A+B​

Answer 1

Answer:176

Step-by-step explanation:

Mean = sum of all entries/number of entries

80=(71+78+75+80+A+B)/6

80*6=304+(A+B)

480=304+(A+B)

A+B=480-304

176

Answer 2

Answer:

176

Step-by-step explanation:

(71+78+75+80+a+b) / 6 = 80

71+78+75+80+a+b = 480

304+a+b = 480

a+b = 176