Question

A 125 metre long train travels at 90 km/hr. How much time it take to cross a 175 metre bridge

Answer 1

$90 \times \frac{5}{18} = 25m \\ 125 + 175 = 300m \\ \frac{300}{25} = 12sec$

Answer 2

Answer:

90× 5/18 = 25m

125+175=300m

300/25= 12 second