Two points , L and N, are 160 m apart .M lies on the strait line joining L and N. An object travels from L ND n at a average speed of 10 m/s in 6 sec and then from M to N at an average speed of 25 m/s.find the average speed of the object for its entire journey from L to N
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the answer is num 5 because 35 /7= 5
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