SOLUTION: Can you please solve this word problem for me? Books cost 40 cents and pamphlets 5 cents at the book sale. If Donnie spends $4.15 at the book sale and purchased 20 more pamphlet

Question 207111This question is from textbook Algeba I: An Incremental Development
: Can you please solve this word problem for me?
Books cost 40 cents and pamphlets 5 cents at the book sale. If Donnie spends $4.15 at the book sale and purchased 20 more pamphlets than he did books, how many pamphlets did he buy?
Thank you so so so so much! This question is from textbook Algeba I: An Incremental Development

Answer by scott8148(6628) (Show Source): You can put this solution on YOUR website!
"Books cost 40 cents and pamphlets 5 cents at the book sale. If Donnie spends $4.15"
___ p(.05) + b(.40) = 4.15

"purchased 20 more pamphlets than he did books" ___ b = p - 20

substituting and multiplying by 100 to clear decimals ___ 5p + 40(p - 20) = 415

5p + 40p - 800 = 415 ___ 45p = 1215 ___ p = 27
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