Տարբերակ 4
5․ S1=100
S2=90
S3=80
t1=t2=t3=1
t=3=180վ
V միջ․-?
Vմիջ․=S1+S2+S3/t=270մ/3ր=100մ+90մ+80մ/180վ=1,5մ/վ
Պատ․՝ 1,5մ/վ
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