Arithmatical - Time and Distance
Important Facts and Formulae
1. |
Speed = |
Distance |
||
---|---|---|---|---|
Time |
Time = | Distance | |||
Speed |
2. | Distance = (Speed x Time). |
---|
3. | km/hr to m/sec conversion : x km/hr = (x ×5 / 18 ) m /sec. |
---|
4. | m/sec to km/hr conversion: : x m/sec = (x ×18/ 5 ) km/hr. |
---|
5. | If the ratio of the speeds of A and B is a : b, then the ratio of the times taken by then to cover the same distance is 1 / a : 1 / b or b : a. |
---|
6. | Suppose a man covers a certain distance at x km/hr and an equal distance at y km/hr. Then,the average speed during the whole journey is (2xy / x + y )km/hr. |
---|