Question

A train covers 180km distance in 4 hours. Another train covers the same distance in 1 hour less. What is the difference in the distance covered by these trains in one hour? A) 45 km b) 9 km c) 40 km d) none of these

Answer 1

In 1 hr. 1st train will cover 180÷4=45 km
In 1 hr. 2nd train will cover 180÷3=60km
Diff.= 15km