81). A person travels a certain distance at 3km/h and reaches 15 min late. If he travels at 4 km/h, he reaches 15 min earlier. The distance he has to travel is
| A). 4.5 km |
| B). 6 km |
| C). 7.2 km |
| D). 12 km |
|
82). A truck covers a distance of 368 km at a certain speed in 8 h. How much time would a car take at an average speed which is 18 km/h more than that of the speed of the truck to cover a distance which is 16 km more than that travelled by the truck?
| A). 7 h |
| B). 5 h |
| C). 6 h |
| D). 8 h |
|
83). Sumit drove at the speed of 45 km/h from home to a resort. Returning over the same route, he got stuck in traffic and took an hour longer. Also, he could drive only at the speed of 40 km/h. How many kilometres did he drive each way?
| A). 250 km |
| B). 360 km |
| C). 375 km |
| D). None of these |
|
84). A car runs at the speed of 40 km/h when not serviced and runs at 65 km/h when serviced. After servicing, the car covers a certain distance in 5 h. How much approximate time will the car take to cover the same distance when not serviced?
| A). 10 h |
| B). 7 h |
| C). 12 h |
| D). 8 h |
|
85). An express train travelled at an average speed of 100 km/h, stopping for 3min after every 75 km. A local train travelled at a speed of 50 km/h, stopping for 1 min after every 25 km. If the trains began travelling at the same time, how many kilometres did the local train travel in the time in which the express train travel 600 km?
| A). 400 km |
| B). 405 km |
| C). 307.25 km |
| D). 415.5 km |
|
86). A man started 20 min late and travelling at a speed of 1% times of his usual speed reaches his office in time. The time taken by the man to reach his office at his usual speed is
| A). 40 min |
| B). 1 h 20 min |
| C). 1 h |
| D). 30 min |
|
87). A man decides to travel 80 km in 8 h partly by foot and partly on a bicycle. If his speed on foot is 8 km/h and on bicycle 16 km/h, what distance would he travel on foot?
| A). 20 km |
| B). 30 km |
| C). 48 km |
| D). 60 km |
|
88). A man covers a certain distance on scooter. Had he moved 3 km/ faster, he would have taken 40 min less. If he had moved 2 km/h slower, he would have taken 40 min more. The distance (in km) is
| A). 42.5 |
| B). 36 |
| C). 37.5 |
| D). 40 |
|
89). A and B are two stations 1000 km apart. A train starts from A and moves towards B at 40 km/h. Another train starts from B at the same time and moves towards A at 60 km/h. How far from A will they cross each other?
| A). 350 km |
| B). 400 km |
| C). 525 km |
| D). 300 km |
|
90). X and Y start walking towards each other at 8 : 00 am at the speeds of 3 km/h and 4 km/h, respectively. They were initially 17.5 km apart. At what time do they meet?
| A). 10:30am |
| B). 10:30pm |
| C). 11:30am |
| D). 11:30pm |
|
