Question 207111
"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