Train covered a distance of 360 km in 5 hours and return back to its origion in 4 hours. Find average speed
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Answer:81 km/hr
Step-by-step explanation:1st speed =360/5=72km/hr
2nd speed =360/4=90km/hr.
Average speed = sum of speeds / 2
= 72+90/2=162/2=81km/hr
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