A man can cross a bridge in 71⁄2 seconds. If his speed is 131⁄2 km per hour, how long is the bridge?
A27.125 m
B28.125 m
C29.125 m
D30.125 m
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A man can cross a bridge in 71⁄2 seconds. If his speed is 131⁄2 km per hour, how long is the bridge?
A27.125 m
B28.125 m
C29.125 m
D30.125 m