9514 1404 393
Answer:
92
Step-by-step explanation:
The maximum whole number that will round to 10 is 14, that is, it may be 4 more than the nearest 10.
If all three numbers are 4 more than the nearest 10, their maximum sum will be 12 more than the sum of the rounded numbers.
For example, consider the numbers 34, 34, 24. These have a sum of 92. When rounded to the nearest 10, their values are 30, 30, 20, which have a sum of 80.
The maximum sum of the three original whole numbers is 92.
