When I add 45 to a certain number and divide the sum by 2, the result is the same as 5 times the number. What is the number?
2 answers:
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The sum of three consecutive integers is three times the middle one: if we call the middle one , the three numbers are
So, their sum is
Which is three times the middle one.
So, if the sum of three consecutive intergers is 48, the middle one must be 48/3 = 16.
So, the three numbers are 15, 16 and 17
