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5+8+10+12+15/5=50/5=10
*nilai rata2 nilai B=
2+p+6+7/4
=15+p/4
nilaiA berarti:
2×B
2×15+p/4
15+p/2
nilai p
15+p/2=10
15+p=20
p=5
jadi nilai p adalah 5