SOLUTION: One half of the sum of three consecutive multiples of 10 is 90. What are the multiples of 10?

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Question 318654: One half of the sum of three consecutive multiples of 10 is 90. What are the multiples of 10?
Answer by JBarnum(2146) About Me  (Show Source):
You can put this solution on YOUR website!
%281%2F2%29%28x%2B%28x%2B10%29%2B%28x%2B20%29%29=90
%28x%2B%28x%2B10%29%2B%28x%2B20%29%29=180
%283x%2B30%29=180
3x=150
x=50
50,60,70


50+60+70=180/2=90
multiples of 10 are 10, 20, 30, 40, 50, 60, 70, 80, 90, 100....