answer the question plz
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raju160:
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t1=20/60
t2=20/80
total dist.=40 (20+20)
v=40/t1+t2=40/(1/3+1/4)=40/(4+3)/12=480/7
v=68.57 km h^-1
t2=20/80
total dist.=40 (20+20)
v=40/t1+t2=40/(1/3+1/4)=40/(4+3)/12=480/7
v=68.57 km h^-1
thanks for answer
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