Posted by Leena on Tuesday, November 6, 2012 at 3:20pm.
For a certain set of five numbers, the mean of all but the largest is 80, and the mean of all but the smallest number is 90. What is the range of the set of five numbers?

Math  Steve, Tuesday, November 6, 2012 at 3:36pm
if the numbers a,b,c,d,e are sorted in increasing order, then
(a+b+c+d)/4 = 80
(b+c+d+e)/4 = 90
equating the expressions for (b+c+d)/4, we have
80  a/4 = 90  e/4
e/4  a/4 = 10
ea = 40
the range is thus 40

Math  Anonymous, Friday, October 10, 2014 at 6:47am
320,360
Answer This Question
Related Questions
 math  What is findind a five number summary of each ser of numbers 7,7,5,4,1,9,...
 math  I am a set of 5 whole numbers that are less than 30. My median is 10. My ...
 math  Please help me to find the first and third quartiles, Q1 and Q3, of the ...
 algebra  find five numbers with a mean of 16, a median of 15 a mode of 21 and a...
 math  Does anyone know how to explain mean, median, mode and range mean?? mean...
 math  There are 5 numbers in a set of data. There are no repeated numbers. ...
 AP Statistics (math)  Find a set of numbers that will satisfy the following ...
 programming  Problem 6.9 Lottery Number Generator A lottery commission offers ...
 math 115  i am trying to find this answer there are 3 questions. 1. micheal ...
 math 157  Data on the highest and lowest number of hits by three baseball teams...
More Related Questions