ABC26GN2190 · Percentage

Subject: General Aptitude · Chapter: Percentage · Exam: 2006 · Marks: · Difficulty:

An interval of 3 hours 40 minutes is wrongly estimated as 3 hours 45.5 minutes. The error percentage is

(a)2.5

(b)5

(c)5.2

(d)5.5

Answer

Answer (as printed): A

Explanation

Correct time $=3 \mathrm{hrs} 40 \mathrm{min}=(3 \times 60+40) \mathrm{min}=220 \mathrm{min}$. Error $=5.5 \mathrm{min}$. $$\text { ∴ Error } \%=\left(\frac{5.5}{220} \times 100\right) \%=\frac{5}{2} \%=2.5 \% \text {. }$$

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