Answer:
Percentage = 56.07% (Rounding to two decimal places)
Step-by-step explanation:
Let's identify the total number of families with children, this way:
40 + 53 + 65 + 73 = 231
Now, let's identify the total number of respondents to the market research:
231 + 63 + 70 + 32 + 16 = 412
Finally, let's identify the percentage of families with children out of the total respondents.
Percentage = Total number of families with children/Total number of respondents to the market research * 100
Percentage = 231/412 * 100 = 56.07% (Rounding to two decimal places)