A) 24 sec
B) 48 sec
C) 60 sec
D) 12 sec
Correct Answer: B
Solution :
[b] \[t=\frac{500+500}{\left( 45+30 \right)\times \frac{5}{18}}\] \[=\frac{1000\times 18}{75\times 5}=48\,\sec \]You need to login to perform this action.
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