.The hundreds digit of this number is 8 and the ones digits is 5.
So we know this much:
8_5
We just need to know the middle (tens) digit.
3-digit number is rounded to the nearest ten, the sum of its digits is 16
When the number is rounded to the nearest ten, the number will have
a 0 on the right end like this
8_0
In order to have a sum of 16, the missing digit in that rounded version
will be 8, so we have:
880 for the rounded version.
Since the original number ended in 5, it had to cause the middle
digit to round up. So the tens digit must have been a 7.
Therefore the original number had to be
875.
That way when rounded to the nearest ten, it would give 880,
and the sum of those digits is 16.
Answer: 875.
Edwin
