Question

Mia is three years older than twice her sister Brooke's age. The sum of their ages is less than 30. What is the greatest age Brooke could be?

a.)7

b.)8

c.) 9

d.)10 ...?

Answer 1

I took the test and the answer was 8

Answer 2

To find the answer, here is the solution for this problem:
Let M be Mia's age and B for Brooke's age.
M = 2B + 3
M + B < 30

M = 30 - B
30 - B = 2B + 3
3B = 27

B = 9
Therefore, Brooke's age is 9 years old. The correct answer would be option C.
Hope this is the answer that you are looking for. Let me know if you need more help next time.