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

Q: Problem: in the manufacture of a certain product , 8 percent of the units produced are defective and 5 percent of the defective units are shipped for sale . what percent of the units produced are defective units that are shipped for sale ?

A: 0.4 %
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Q: Problem: | x + 3 | – | 4 - x | = | 9 + x | how many solutions will this equation have ?

A: 1
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Q: Problem: by selling 15 pencils for a rupee a man loses 20 % . how many for a rupee should he sell in order to gain 20 % ?

A:
1
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