In a 100 m race, A covers the whole distance in 36 seconds and B in 45 seconds. In this race, A beats B by · ABC26GN5113
Subject: General Aptitude · Chapter: Races and Games of Skill
In a 100 m race, $A$ covers the whole distance in 36 seconds and $B$ in 45 seconds. In this race, $A$ beats $B$ by
(a)20 m
(b)25 m
(c)22.5 m
(d)9 m
Answer
Answer (as printed): A
Explanation
Clearly, $A$ beats $B$ by 9 seconds. Distance covered by $B$ in 9 sec. $=\left(\frac{100}{45} \times 9\right) \mathrm{m}=20 \mathrm{m}$. $\therefore A$ beats $B$ by 20 m.