Final answer:
Cameron estimates he has $15 in his wallet. To find the actual amount, we need to add 20% of the estimated amount to the estimate. The actual amount of money Cameron has in his wallet is $18.
Step-by-step explanation:
Cameron estimates that he has $15 in his wallet. However, his estimate is 20% less than the actual amount. To find the actual amount, we need to add 20% of the estimated amount to the estimate.
Step 1: Calculate 20% of $15: 20% of $15 = 0.20 x $15 = $3
Step 2: Add the 20% to the estimate: $15 + $3 = $18
Therefore, the actual amount of money Cameron has in his wallet is $18.