The task is to generate the correct answer for a given math problem.

Q: Problem: if | x - 9 | = 3 x , then x = ?

A: - 4.
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Q: Problem: if the average of 5 x and 8 y is greater than 90 , and x is twice y , what is the least integer value of x ?

A: 4
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Q: Problem: the difference between simple interest and compound interest on rs . 1400 for one year at 20 % per annum reckoned half - yearly is :

A:
$ 989.9
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