the mean of 5numbers is 30 is excluded there mean become 28 what is the excluded number
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The average /mean of five numbers is 13.Four of the numbers are:11,9,15 and 26.what is the fifth number?
The equation is:
Let x=the fifth number
(11+9+15+26+x)/5 =13
Simplify the numerator: (61+x)/5 = 13
Cross multiply: 61+x=5(13)
Simplify 61+x=65
Add -61 to both sides: x=65+-61
simplify x=4
ANSWER: The fifth number is 4.
The equation is:
Let x=the fifth number
(11+9+15+26+x)/5 =13
Simplify the numerator: (61+x)/5 = 13
Cross multiply: 61+x=5(13)
Simplify 61+x=65
Add -61 to both sides: x=65+-61
simplify x=4
ANSWER: The fifth number is 4.
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