Question

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

Answer 1

23.5

Explanation:

Because if you divide 94 by 4 then you get 23.5. You would divide 94 only because if it is 95 or above you must round it to a hundred if it is to the nearest 10. So it has to be 85 - 94 as the number divided because by anything else below or above would be rounded to 80 and lower and anything higher is 100 and higher.