Saved Bookmarks
| 1. |
An aeroplane covers a certain distance at a speed of 250 km/h in 4 hours. To cover the same distance in 1 hour and 40 minutes, what should be its speed?1. 500 km/h2. 550 km/h3. 600 km/h4. 675 km/h |
|
Answer» Correct Answer - Option 3 : 600 km/h Given: Speed = 250 km/hr Time1 = 4 hours Time2 = 1 hour 40 minutes ⇒ (60 + 40) minutes ⇒ 100 minutes = 100/60 hours ⇒ 5/3 hours Formula used: Distance = Speed × Time taken Calculation: Distance covered = (250 × 4) km ⇒ 1000 km Required speed = 1000 ÷ (5/3) km/hr ⇒ 1000 × (3/5) km/hr ⇒ 600 km/hr ∴ The required speed is 600 km/hr |
|