A is travelling at 72 km per hour on a highway while B is travelling at a speed of 25 mitres per second. What us the difference in their speeds in mitres per second ?
A. $$1\frac{1}{2}$$ m/sec
B. 2 m/sec
C. 3 m/sec
D. 5 m/sec
Answer: Option D
Solution (By Examveda Team)
A's speed := 72 km/hr
= $$\left( {72 \times \frac{5}{{18}}} \right)$$ m/sec
= 20 m/sec
B's speed = 25 m/sec
Difference :
= (25 - 20) m/sec
= 5 m/sec
This Question Belongs to Arithmetic Ability >> Speed Time And Distance
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