October 2018 1 26 Report
1.sebuah bus melaju di jalan tol yang lurus.selama 50 menit pertama bus itu menempuh jarak 80 km,20 menit selanjutnya menempuh jarak 20 km,dan 20 menit selanjutnya menempuh jarak 30 km.Tentukanlah kelajuan rata-rata bus tersebut!!!


PAKAI JALANNYA!!!!!!!!!!!!
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