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.
Answer & explanation
Correct answer: option 4
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