A) 14 km/hr
B) 24 km/hr
C) 34 km/hr
D) 44 km/hr
Correct Answer: B
Solution :
[b] By the theorem: Average speed \[=\frac{3\times 40\times 30\times 15}{40\times 30+30\times 15+40\times 15}\] \[=\frac{3\times 40\times 30\times 15}{2250}=24\,\,km/hr\]You need to login to perform this action.
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