Cambodia Grade 9 Lower Secondary Diploma Exam
Cambodia Lower Secondary Diploma Examination (Grade 9 / ប្រឡងសញ្ញាបត្រមធ្យមសិក្សាបឋមភូមិ)
Natural SciencesEnglish
Exam overviewPractice session
A bus travels along National Road 5 covering a distance of 180 kilometers in 3 hours at constant speed. What is the average speed of the bus?
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