Percent Food Increase
1. Stating the problem: John ate 20 pounds of chicken wings and 15 pounds of hot dogs. Kyle ate 20% more chicken wings and 40% more hot dogs. We need to find the approximate percentage by which Kyle's total food intake exceeded John's.
2. Calculate Kyle's chicken wings intake: Since Kyle ate 20% more, multiply John's 20 pounds by $1 + 0.20 = 1.20$.
$$20 \times 1.20 = 24\text{ pounds}$$
3. Calculate Kyle's hot dogs intake: Since Kyle ate 40% more, multiply John's 15 pounds by $1 + 0.40 = 1.40$.
$$15 \times 1.40 = 21\text{ pounds}$$
4. Calculate the total food intake for John and Kyle:
John's total:
$$20 + 15 = 35\text{ pounds}$$
Kyle's total:
$$24 + 21 = 45\text{ pounds}$$
5. Find the difference in total intake:
$$45 - 35 = 10\text{ pounds}$$
6. Calculate the percentage increase of Kyle's intake over John's:
$$\frac{10}{35} \times 100 = 28.57\%$$
7. Round to the nearest percent:
$$29\%$$
Answer: C) 29