Question

what is the probability that a randomly chosen point on the grid below is in the blue area?

Explanation:

Step1: Count total squares

The grid has 5 rows and 4 columns, so total squares $= 5\times4 = 20$.

Step2: Count blue squares

Blue squares have 3 rows and 4 columns, so blue squares $= 3\times4 = 12$.

Step3: Calculate probability

Probability $= \frac{\text{Blue squares}}{\text{Total squares}} = \frac{12}{20} = \frac{3}{5}$.

Answer:

$\frac{3}{5}$