The task is to generate the correct answer for a given math problem.
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Question: Problem: anne bought doughnuts for a class breakfast party . she bought 9 chocolate doughnuts , 7 coconut doughnuts , and 9 jam - filled doughnuts . how many doughnuts did anne buy in all ?

Answer: 25


Question: Problem: triangle atriangle b are similar triangles with areas 2023 units square and 1792 units square respectively . the ratio of there corresponding height would be

Answer: 17 : 16


Question: Problem: let the number which when multiplied by 15 is increased by 280 .

Answer:
20