Time Speed Distance 1/3

13.  A car completes a certain journey in 8 hours. It covers half the distance at 40 km/hr. and the rest at 60 km/hr. The length of the journey is :
a. 350 km
b. 420 km
c. 384 km
d. 400 km

14. Ravi travelled 1200 km by air which formed $\left( {\displaystyle\frac{2}{5}} \right)$ of his trip. One third of the whole trip, he travelled by car and the rest of the journey he performed by train. The distance travelled by train was :
a. 1600 km
b. 800 km
c. 1800 km
d. 480 km

15. Walking at $\displaystyle\frac{3}{4}$ of his usual speed a man is $1\displaystyle\frac{1}{2}$ hr late. Find his usual travel time.
a. 4.5 hr
b. 3 hr
c. 6 hr
d. 2.5 hr

16. Two cyclists cover the same distance in 15 km/hr and 16 km/hr, respectively. Find the distance travelled by each, if one takes 16 min longer than the other does.
a. 50 km
b. 60 km
c. 64 km
d. 70 km

17. Train A took 35 minute to cover a distance of 50 km. If the speed of train B is 25% faster than train A, it will cover the same distance in:
a. 20 min
b. 28 min
c. 30 min
d. 25 min

18. By walking at $\displaystyle\frac{3}{2}$ of his usual speed, a man reaches his office 20 minutes earlier than usual . His usual time is :
a. 30 min
b. 60 min
c. 75 min
d. 90 min