Let first number = x then
we have x and 9x and x + 100
x + 9x + x + 100 = 606
11x + 100 = 606
11x = 506
x = 46
so the three numbers are 46, 146 and 414 Answer
If 12.6 was rounded, that means that it was rounded to the tenths place.
You know this because the number has one decimal place, so that must be what it was rounded to.
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