SOLUTION: The units digit of the sum of three consecutive integers is 8. What is the units digit of the least of these integer?
Algebra.Com
Question 224052: The units digit of the sum of three consecutive integers is 8. What is the units digit of the least of these integer?
Answer by ankor@dixie-net.com(22740) (Show Source): You can put this solution on YOUR website!
The units digit of the sum of three consecutive integers is 8.
What is the units digit of the least of these integer?
:
Three consecutive integers. x, (x+1), (x+2)
:
Let s = sum of the integers
:
Write an equation:
s = x + (x+1) + (x+2)
s = 3x + 3
Substitute for x until the unit digit of s = 8
A few minutes you will have
x = 5 is the least digit
s = 5 + 6 + 7
s = 18
:
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