Advertisements
Advertisements
प्रश्न
The second class railway fare for 240 km of Journey is Rs 15.00. What would be the fare for a journey of 139.2 km?
Advertisements
उत्तर
Let Rs x be the fare for a journey of 139.2 km.
| Distance (in km) | 240 | 139.2 |
| Fare (in Rs.) | 15 | x |
\[\text{ Since the distance travelled and the fare are in direct variation, we have: } \]
\[\frac{240}{139 . 2} = \frac{15}{x}\]
\[ \Rightarrow 240 \times x = 15 \times 139 . 2\]
\[ \Rightarrow x = \frac{15 \times 139 . 2}{240}\]
\[ = \frac{2088}{240}\]
\[ = 8 . 7\]
\[\text{ Thus, the fare for a journey of 139 . 2 km will be Rs } 8 . 70 .\]
संबंधित प्रश्न
A and B can polish the floors of a building in 10 days. A alone can do \[\frac{1}{4}\] th of it in 12 days. In how many days can B alone polish the floor ?
If 7 kg onions cost 140 rupees, how much must we pay for 12 kg onions?
Both x and y are in direct proportion, then `1/x` and `1/y` are ______.
An auto rickshaw takes 3 hours to cover a distance of 36 km. If its speed is increased by 4 km/h, the time taken by it to cover the same distance is ______.
Length of a side of a square and its area vary directly with each other.
If Naresh walks 250 steps to cover a distance of 200 metres, find the distance travelled in 350 steps.
Ravi starts for his school at 8:20 a.m. on his bicycle. If he travels at a speed of 10 km/h, then he reaches his school late by 8 minutes but on travelling at 16 km/h he reaches the school 10 minutes early. At what time does the school start?
A water tank casts a shadow 21 m long. A tree of height 9.5 m casts a shadow 8 m long at the same time. The lengths of the shadows are directly proportional to their heights. Find the height of the tank.
The table shows the time four elevators take to travel various distances. Find which elevator is fastest and which is slowest.
| Distance (m) | Time (sec.) | |
| Elevator- A | 435 | 29 |
| Elevator- B | 448 | 28 |
| Elevator- C | 130 | 10 |
| Elevator- D | 85 | 5 |
How much distance will be travelled by elevators B and C separately in 140 sec? Who travelled more and by how much?
A bowler throws a cricket ball at a speed of 120 km/h. How long does this ball take to travel a distance of 20 metres to reach the batsman?
