Problem Analysis:
Jimmy is painting stripes on a wall. Each stripe is 20 inches wide, and the wall is 15 feet long. We need to determine how many stripes Jimmy can paint on the wall.
Step-by-Step Solution:
1.
Convert the length of the wall from feet to inches:
- There are 12 inches in 1 foot.
- The wall is 15 feet long.
- Therefore, the length of the wall in inches is:
\[
15 \text{ feet} \times 12 \text{ inches/foot} = 180 \text{ inches}
\]
2.
Determine how many stripes fit into the wall:
- Each stripe is 20 inches wide.
- To find out how many stripes can fit into the wall, divide the total length of the wall by the width of one stripe:
\[
\frac{180 \text{ inches}}{20 \text{ inches/stripe}} = 9 \text{ stripes}
\]
3.
Verify the calculation:
- If Jimmy paints 9 stripes, the total width covered by the stripes is:
\[
9 \text{ stripes} \times 20 \text{ inches/stripe} = 180 \text{ inches}
\]
- This matches the length of the wall, so the calculation is correct.
Final Answer:
The number of stripes Jimmy can paint on the wall is:
\[
\boxed{9}
\]
Thus, the correct choice is:
\[
\boxed{C}
\]
Parent Tip: Review the logic above to help your child master the concept of arithmetic reasoning practice worksheet.
