If the average of 15, 25, 19, 20, 23, 18

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Target Exam

CUET

Subject

General Test

Chapter

Numerical Ability

Topic

Average

Question:

If the average of 15, 25, 19, 20, 23, 18 and (x-3) is 20. then Find the average of x, (x+6), (2x-1) and 23.

Options:

$28\frac{1}{2}$

Correct Answer:

Explanation:

Average of 15, 25, 19, 20, 23, 18 and (x-3) is 20

Average = (15+25+19+20+23+18+x-3)/7 = 20

x+117 = 140

x = 23

average of x, (x+6), (2x-1) and 23 = (23+29+45+23)/4 = 120/4

The correct answer is Option (4) → 30