Answer:
23
Step-by-step explanation:
Given:
Hunter and Logan built small sand towers on the beach.
Hunter built 20 towers, and Logan built 9 towers.
Then, the ocean water came up and knocked down 6 of the towers.
<u>Question asked:</u>
How many of the boys' sand towers were left standing?
<u>Solution</u>:
Number of towers made by Hunter = 20
Number of towers made by Logan = 9
Total towers made by both = 20 + 9 = 29
Number of towers knocked down by the ocean water = 6
Remaining number of towers = 29 - 6 = 23
Thus, 23 sand towers of the boys were left standing.
