Emily is three years older than twice her sister Mary’s age. The sum of their ages is less than 30. Let x represent Mary's age. Which inequality represents Mary’s possible age? A. 0 < x < / = 9 B. 0 < x < / = 18 C. 0 < x < 18 D. 0 < x < 9

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asked Jul 1, 2017 28.0k views

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Emily is three years older than twice her sister Mary’s age. The sum of their ages is less than 30.

Let x represent Mary's age.

Which inequality represents Mary’s possible age?

A. 0 < x < / = 9
B. 0 < x < / = 18
C. 0 < x < 18
D. 0 < x < 9

Mathematics
high-school

Beslan Tularov asked

by Beslan Tularov

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1 Answer

2 votes

2x+3+x<30

3x<27

x<9

The answer would be D.

Sumit Deo answered Jul 6, 2017

by Sumit Deo

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