16
Q:
A) 3 km/hr | B) 4 km/hr |
C) 5 km/hr | D) 6 km/hr |
Answer: B) 4 km/hr
Explanation:
Explanation:
Let P's speed = x km/hr. Then, Q's speed = (7 - x) km/ hr.
So, 24/x + 24/(7 - x) = 14
- 98x + 168 = 0
(x - 3)(x - 4) = 0 => x = 3 or 4.
Since, P is faster than Q,
so P's speed = 4 km/hr and Q's speed = 3 km/hr.