Question

chico is putting new tile down on his living room floor, which is represented by the rectangle. the shaded squares of the rectangle represent tiles that chico has installed. what percentage of the tiles has chico put down on his living room floor? a 2 b 3 c 7 d 80%

Explanation:

Step1: Count total tiles

Count the total number of squares in the rectangle. There are 8 columns and 5 rows, so the total number of tiles is $8\times5 = 40$.

Step2: Count installed tiles

Count the number of shaded (installed) tiles. There are 32 shaded tiles.

Step3: Calculate percentage

Use the formula $\text{Percentage}=\frac{\text{Number of installed tiles}}{\text{Total number of tiles}}\times100\%$. So, $\frac{32}{40}\times100\%=\frac{3200}{40}\% = 80\%$.

Answer:

D. 80%