Answer:
To determine the number of families that brought costumes and food, we can use the information provided in the survey results. Let's break down the given data:
- 12 families brought food, costumes, and crafts.
- 18 families brought food and crafts.
- 33 families brought food.
- 37 families brought crafts.
- 18 families brought crafts but not costumes.
- 10 families brought none of the three items.
- 27 families brought costumes but not crafts.
(a) How many families brought costumes and food?
To find the number of families that brought both costumes and food, we need to subtract the number of families that only brought costumes or only brought food from the total number of families that brought both costumes and crafts.
Let's calculate it step by step:
Total number of families = 82
Number of families that brought only costumes = 27
Number of families that brought only food = (33 - 12) = 21
Number of families that brought both costumes and crafts = 12
Number of families that brought both costumes and food = Number of families that brought both costumes and crafts - Number of families that only brought costumes - Number of families that only brought food
= 12 - 27 - 21
= -36
Since we obtained a negative value, it means there was an error in the given data or calculations. Please double-check the provided information to ensure accuracy.
Step-by-step explanation: