29) Jumlahkan terlebih dahulu diagram batang yg ada: 18 + 19 + 17 + 18 = 72
x = th. 2017
(72 + x)/5 = 17,2
72 + x = 17,2 x 5
72 + x = 86
x = 86 - 72 = 14
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29) Jumlahkan terlebih dahulu diagram batang yg ada: 18 + 19 + 17 + 18 = 72
x = th. 2017
(72 + x)/5 = 17,2
72 + x = 17,2 x 5
72 + x = 86
x = 86 - 72 = 14