A watch becomes fast by 5 minutes everyday. By what percent does it become fast? · ABC26GN5202
Subject: General Aptitude · Chapter: Clocks · Exam: R.R.B. 2006
A watch becomes fast by 5 minutes everyday. By what percent does it become fast?
(a)$\frac{5}{24} \%$
(b)$\frac{1}{12} \%$
(c)5\%
(d)$\frac{50}{144} \%$
Answer
Answer (as printed): D
Explanation
Number of minutes in a day $=(24 \times 60)=1440$. $$\text { ∴ } \text { Required percentage }=\left(\frac{5}{1440} \times 100\right) \%=\frac{50}{144} \% .$$
Explanation as extracted from the printed page; notation may be imperfect.