* A distance of 32km is coveted in 1.648 than speed is option A}50/hr B}60km/hr C}30km/hr D}20km/hr
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Step-by-step explanation:
Let the total distance travelled be x km Then total time taken = 10x/3+20x/3+60x/3=30x+60x+180x
=1806x+3x+x=18010x=18x hrs Then average speed = =TotaltimetakenTotaldistancetravelled
=x/18x km/hr = 18 km/hr
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