SOLUTION: The average of a list of positive numbers is 20 per cent of the sum of the
numbers. How many numbers are there in the list?
(A) 5 (B) 20 (C) 80 (D) 100 (E) Cannot be sai
Algebra ->
Average
-> SOLUTION: The average of a list of positive numbers is 20 per cent of the sum of the
numbers. How many numbers are there in the list?
(A) 5 (B) 20 (C) 80 (D) 100 (E) Cannot be sai
Log On
Question 273631: The average of a list of positive numbers is 20 per cent of the sum of the
numbers. How many numbers are there in the list?
(A) 5 (B) 20 (C) 80 (D) 100 (E) Cannot be said. Found 2 solutions by stanbon, richwmiller:Answer by stanbon(75887) (Show Source):
You can put this solution on YOUR website! The average of a list of positive numbers is 20 per cent of the sum of the
numbers. How many numbers are there in the list?
------------
Let the sum be "x":
---
Average = sum/#
---
Average = 0.20x
sum/# = 0.20x
x/# = 0.20x
# = 1/0.20
# = 5
==================
Cheers,
Stan H.