Asked by Kareen
Fred and Jane are brother and sister. Fred is 3years older than twice jane's age. The sum of their ages is less than 36. Taking jane's age
To be x years form a inequation. What can you say about jane's age.
To be x years form a inequation. What can you say about jane's age.
Answers
Answered by
Reiny
Jane ---- x
Fred ---- 2x+3
x + 2x+3 < 36
3x < 33
x < 11
Looks like Jane is less than 11 years old.
testing:
let Jane be 10
then Fred is 23 , their sum is < 36
Fred ---- 2x+3
x + 2x+3 < 36
3x < 33
x < 11
Looks like Jane is less than 11 years old.
testing:
let Jane be 10
then Fred is 23 , their sum is < 36
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