May 2019 1 159 Report
Dua buah roda berturut turut memiliki jari jari 8 cm dan 24 cm dihubungkan dengan tali seperti gambar diatas.
Jika roda pertama melakukan 30 putaran per menit, roda kedua melakukan...... putaran/menit.
a. 90
b. 60
c. 20
d. 15
e. 10
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