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In covering a distance of 30 km, Abhay takes 2 hours more than Sameer. If Abhay doubles his speed, then he would take 1 hour less than Sameer. Abhay's speed (in km/hr) is
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- 5
- 6
- 6.25
- 7.5
Correct Option: A
Abhay’s speed = x kmph
Sameer’s speed = y kmph
| ∴ | − | = 2 ...(i) | ||
| x | y |
| and, | − | = 1 ...(ii) | ||
| y | 2x |
On adding,
| − | = 3 | ||
| x | 2x |
| ⇒ | = 3 | |
| 2x |
| ⇒ | = 3 ⇒ 6x = 30 | |
| 2x |
⇒ x = 5 kmph
