Question

find the value of x such that the data set has the given mean
99, 86, 76, 95, x; mean 91

a) x =91
b) x=87
c) x=82
d) x=99

Answer 1

The Answer should be
(99 + 86 + 76 + 95 + x)/5 = 91
(356 + x)/5 = 91
356 + x = 5*91
356 + x = 455
x = 455 - 356
Answer: x = 99

Hope This helps <3

Answer 2

(99 + 86 + 76 + 95 + x)/5 = 91
(356 + x)/5 = 91
356 + x = 5*91
356 + x = 455
x = 455 - 356
Answer: x = 99