Final answer:
After calculating that Chrissy had eaten 10% of the cookies, equivalent to 6 cookies, it was determined that there were originally 60 cookies. Subsequently, the number of cookies left after Chrissy ate her share was 54.
Step-by-step explanation:
The question asks us to determine the number of Christmas cookies that were left after Chrissy ate 10% of them, known to be 6 cookies. To find the original number of cookies, we use the concept that 10% of the original number is equal to 6. We express this as follows:
10% of total cookies = 6 cookies
Or,
0.10 × total cookies = 6
To find the total number of cookies, we divide 6 cookies by 0.10:
total cookies = 6 ÷ 0.10
total cookies = 60 cookies
Now, to find the number of cookies left after Chrissy ate the 6 cookies, we subtract 6 from the total:
cookies left = total cookies - eaten cookies
cookies left = 60 - 6
cookies left = 54 cookies
Therefore, after Chrissy ate 6 Christmas cookies, there were 54 cookies left.