Answers

2015-06-27T17:54:06+05:30
Let the distance be x km.
According to the question,
 \frac{x}{40}- \frac{11}{60}=   \frac{x}{50}- \frac{5}{60}
\frac{600*x}{40} - \frac{11*600}{60}= \frac{x*600}{50}-\frac{5*600}{50}
15x-110=12x-50
15x-12x=110-50
3x=60
x= \frac{60}{3}=20
Ans:The train must cover 20 km.
2 5 2