ഒരു കാര് 3 മണിക്കൂര് കൊണ്ട് 54 കിലോമീറ്റര് ദൂരം സഞ്ചരിക്കുന്നു എങ്കില് കാറിന്റെ വേഗത എത്ര?
A18 m/s
B5 m/s
C10 m/s
D12 m/s
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