In 1967 a 30-second super bowl commercial cost 40,000. In 2000 a 30-second commercial cost 1,800,000. What was the percent of ch
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Answer:
Step-by-step explanation:
The ratio of the number of fiction books is 9:4
the difference between the number of fiction and nonfictionn is 245
so if the number of fiction books = 9x
then the number of nonfiction books = 4x
then difference = 9x-4x = 5x
the difference is given 245
then 5x= 245
x==49
number of fiction books =49×9=441
number of nonfiction books =49×4=196
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