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julah berat 16org= 16 x 32,5kg=520kg
berat 1 orang tambahan (egi ):
= 520 - 480 = 40kg
untuk mencari berat badan regi (a) =>
32,5 = (480+a)/16
a = (32,5 x 16) - 480
= 520 - 480
= 40 kg