A) 80 km/h
B) 60 km/h
C) 15 km/h
D) 145 km/h
Correct Answer: C
Solution :
\[{{\vec{v}}_{B}}+{{\vec{v}}_{A}}=\] \[{{\vec{v}}_{B}}+{{\vec{v}}_{A}}=80+65=145\,km/hr\]
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