2012 · Q8
The average of x, y and z is 30, and the average of x and y is 20. The value of z is
general-mental-abilityquantitative-aptitude
- A10
- B20
- C40
- D50
Explanation
x + y + z = 90 and x + y = 40, so z = 90 - 40 = 50.
The average of x, y and z is 30, and the average of x and y is 20. The value of z is
Explanation
x + y + z = 90 and x + y = 40, so z = 90 - 40 = 50.