Question

Four whole nuber are each rounded to the nearest 10 the sum of the four rounded numbers is 90 what is the possible maximum sum of the four original numbers

Answer 1

`106`

Explanation:

Let's try guessing...

`45+45=90\\30+30+30=90\\10+20+30+30=90`

All the units place has to be 4, if it is higher than 4 then the answer will not be 90 (the sum of the four rounded numbers).

`14 + 24 + 34 + 34= 106`