Question

On Tuesday Eduardo bought nine boxes. On Wednesday half of all the boxes that he had were destroyed. On Thursday there were only 19 left. How many did he have on Monday?

a) 10
b) 20
c) 18
d) 26

Answer 1

To find out how many boxes Eduardo had on Monday, we double the number of boxes he had on Thursday, 19, and then subtract the 9 boxes he bought on Tuesday, resulting in 29 boxes.

Step-by-step explanation:

The question revolves around a simple arithmetic problem often encountered in middle school mathematics. To determine how many boxes Eduardo had on Monday, we need to work backwards from Thursday. It's given that on Thursday, there were 19 boxes left after half of the boxes were destroyed on Wednesday. Therefore, on Wednesday before the destruction, Eduardo must have had 19 boxes times 2, which equals 38 boxes. Knowing that Eduardo bought 9 boxes on Tuesday, we subtract those to find out how many he had on Monday. So, 38 boxes minus 9 boxes equals 29 boxes on Monday.