Jawaban:
mean=4+3+8+5+11+9+3+16+5+15 +9+11+12+9+10+8+7+5+4+8= 162:20=8,2menit
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Jawaban:
mean=4+3+8+5+11+9+3+16+5+15 +9+11+12+9+10+8+7+5+4+8= 162:20=8,2menit