9514 1404 393
Answer:
- see attached for the tape diagram
- 18 questions
Step-by-step explanation:
The tape diagram model will have 7 squares labeled "correct" and 2 labeled "incorrect." See below for that model.
We note the model has a total of 9 squares, and that the difference between correct and incorrect is 5 squares. If we double the lengths of each tape, making them 14 and 4, then the ratio will be the same, and the difference will become 14-4 = 10. This new larger model will model Britney's quiz result. It represents a total of 14+4 = 18 questions.
Britney's quiz had 18 questions.
