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Basic Mathematics
QUESTION #7948
Question 1
A 100-metre long train passes a bridge at 72 km/hr in 25 seconds. What is the length of the bridge?
Correct Answer Explanation
Speed \(= 72 \text{ km/hr} = 72 \times \dfrac{1000}{3600} = 20 \text{ m/s}\)
Total distance covered in 25 s \(= 20 \times 25 = 500\) m
Length of bridge \(= 500 - 100 = 400\) m
Total distance covered in 25 s \(= 20 \times 25 = 500\) m
Length of bridge \(= 500 - 100 = 400\) m
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