List of top Quantitative Aptitude Questions on Arithmetic Mean

The arithmetic mean of some numbers is 18 and their median is 16. Then what is the mode?
The arithmetic mean of 7.6, 6.8, 5.4, 6.4, 7.2, (4)8, 6.6, and 5.8 is
Calculate the Arithmatic mean from the following data :
Wages (in Rs.)100200300400500
No. of Workers45325
The arithmetic mean of a few numbers is 40. If each number is increased by 7, and then multiplied by 12, then the new mean will be: