Answer this question its very improtant
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let distance be xkm
time taken to reach college=x/20hr
time to reach home=x/30hr
average speed=total distance covered/total time taken
=(x+x)/(x/20+x/30)km/hr
=2x/x(1/20+1/30)
=2/( 3+2/60)
=2/(5/60)
=( 2 x 60)/5
24km/hr
time taken to reach college=x/20hr
time to reach home=x/30hr
average speed=total distance covered/total time taken
=(x+x)/(x/20+x/30)km/hr
=2x/x(1/20+1/30)
=2/( 3+2/60)
=2/(5/60)
=( 2 x 60)/5
24km/hr
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the total speed 24km/hr
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