if the mean of 4number 2,6,7and a is 15 and mean of other 5 numbers 6,18,1,a,b is 50.what is the value of b
Answers
Answer:
a = 45 , b = 180
Step-by-step explanation:
Mean = 15 = (2 + 6 + 7 + a)/4 60 = 15 + a a = 45 Mean = 50 = (6 + 18 + 1 + 45 + b)/5 250 = 70 + b b = 180 Mark Me as Brainly list