Question

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

Answer 1

I took the test the answer is 8

Answer 2

Let Mia's age be m and her sister's age be x m=2x+3 2x+3+x=less than 30 For greatest age we need to take largest number. 3x+3=29 x=26/3 But the options are all in whole numbers, so if 3x+3=27 then x =8