Final answer:
To find the annual earnings from mowing after giving 10% to a friend, we multiply the weekly earning of $195.87 by 52 weeks to obtain the total annual earnings, calculate 90% of that to account for the 10% given away, resulting in approximately $9,166.72, which closely matches option C.
Step-by-step explanation:
The question is asking to calculate the total amount earned from mowing if one earns $195.87 every week for a year and gives away 10% to a friend. To find the answer, we follow these steps:
- Firstly, calculate the total weeks in a year. Most years have 52 weeks, so we multiply $195.87 (weekly earnings) by 52 (weeks).
- Next, calculate 10% of the earnings. Since we give away 10%, we keep 90%. Therefore, we calculate 90% of the annual earnings.
- Finally, we find the total amount earned after giving away 10% to a friend.
Step-by-step calculation:
- Annual earnings before giving away to a friend: $195.87/week × 52 weeks = $10,185.24
- Amount retained after giving away 10%: $10,185.24 × 90% = $9,166.716
- The total amount earned after giving 10% to a friend is approximately $9,166.72, which, when rounded to the nearest whole number, is $9,166.72 (Option C is the closest).
Therefore, the answer is approximately $9,166.72, and the best matching option is C) $9,386.40.