Question

71 - 80, 81 - 90, 91 - 100 are the classes, then the upper boundary of class
81 - 90 is
(A) 90.5
(B) 90
(C) 89
(D) 89.5
answer it with a solution​

Answer 1

Answer:

D). 89.5

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Answer 2

Answer:

D. 89.5

Step-by-step explanation:

89+90/2 = 179/2= 89.5