Question

Four whole numbers are each rounded to the nearest 10. The sum of four whole rounded numbers is 90. Whats the maximum possible sum of the original four numbers?

Answer 1

Answer:

60

Step-by-step explanation:

bcz that first number would be multiple

Answer 2

Answer:

106

Step-by-step explanation:

Let suppose, the four numbers whole numbers are: A+B+C+D=90.

The highest sum possible by rounding the numbers to get 90 is by  30+30+20+10=90

Now the rules for rounding a number is if;

1) A number is below 5, it will drop to the previous tenth e.g 14 to 10

2) A number is 5 or greater than 5, it will increase to the next tenth

    e.g 15 to 20

In order to get the original numbers, maximize the the numbers which helped us getting 90.

These are 34+34+24+14=106.

These are the original numbers which are rounded to get 90.