Final answer:
The total number of houses in the neighborhood is calculated by dividing the number of red mailboxes (60) by the percentage of houses with red mailboxes (5%). The calculation reveals that there are 1200 houses in total.
Step-by-step explanation:
The question asks us to find the total number of houses in the neighborhood given that 5% of the houses have red mailboxes, and there are 60 red mailboxes in total. To calculate this, we can set up a proportion where 5% (or 0.05 when converted to a decimal) of the total number of houses is equal to 60 houses. The equation will look something like this:
Total number of houses x 0.05 = 60
To find the total number of houses, we divide both sides of the equation by 0.05:
Total number of houses = 60 / 0.05
When we perform the division, we get:
Total number of houses = 1200
Therefore, the total number of houses in the neighborhood is 1200, which corresponds to option (a).