Question

Find the difference between 455Km 370m and 290Km 93m?​

Answer 1

Step-by-step explanation:

Let x be the length of the train, then according to the question,

\frac{x+370}{51}=\frac{x+480}{62}

51

x+370

=

62

x+480

62(x+370)=51(x+480)62(x+370)=51(x+480)

62x+22940=51x+2448062x+22940=51x+24480

11x=154011x=1540

x=140 mx=140m

Taking the length of the 2nd bridge into consideration,

Speed of the train=\frac{x+480}{62}=\frac{140+480}{62}=\frac{620}{62}=10{\times}\frac{18}{5}=36kmhr^{-1}

62

x+480

=

62

140+480

=

62

620

=10×

5

18

=36kmhr

−1