ABC26GN1508 · Average

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

The average of five numbers is 58. The average of the first two numbers is 48.5 and the average of last two numbers is 53.5. What is the third number?

Answer

Answer (as printed):

Explanation

Third number = (Sum of 5 numbers) – (Sum of 4 numbers) = (58 × 5) – [(48.5 × 2) + (53.5 × 2)] = 290 – (97 + 107) = 290 – 204 = 86.

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

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