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Pake hasil fisika sama derajatnya fisika.
90/360. x = 60
x = 360/90 x 60
x = 4 x 60
x = 240 org
Yg suka matematika:
150/360 x 240 = 5/12 x 240 = 100 org c)
90derajat=60 orang
yang menyukai matematika
150/90 x 60 = 100 orang