ABC26GN1523 · Average

Subject: General Aptitude · Chapter: Average · Exam: 2009 · Marks: · Difficulty:

The monthly incomes of five persons are ₹ 1132, ₹ 1140, ₹ 1144, ₹ 1136 and ₹ 1148 respectively. What is their arithmetic mean?

(a)₹ 1100

(b)₹ 1120

(c)₹ 1132

(d)₹ 1140

Answer

Answer (as printed): D

Explanation

Arithmetic mean $=₹\left(\frac{1132+1140+1144+1136+1148}{5}\right)$ $$=₹\left(\frac{5700}{5}\right)=₹ 1140 .$$

Explanation as extracted from the printed page; notation may be imperfect.