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

Q: Problem: a person want to give his money of $ 1800 to his 3 children a , b , c in the ratio 2 : 3 : 4 . what is the b ' s share ?

A: $ 600
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Q: Problem: in one alloy there is 12 % chromium while in another alloy it is 8 % . 35 kg of the first alloy was melted together with 40 kg of the second one to form a third alloy . find the percentage of chromium in the new alloy .

A: 9.75 %
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Q: Problem: company c sells a line of 25 products with an average retail price of $ 1,400 . if none of these products sells for less than $ 420 , and exactly 10 of the products sell for less than $ 1,000 , what is the greatest possible selling price of the most expensive product ?

A:
1680
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