Respostas

2013-06-18T19:35:31-03:00

segunda= 1/5 total

terça= 2/5 total

quarta= 1/3 de 2/5= 2/15 do total

quinta=32

 

total= x

 

\frac{1}{5}+\frac{2}{5}+\frac{2}{15}=\frac{3+6+2}{15}=>\frac{11}{15}\ do\ total\\\\\frac{11x}{15}+32=x\\\frac{11x}{15}-x=-32\\\frac{11x-15x}{15}=-32\\\frac{-4x}{15}=-32\\-4x=15*-32\\-4x=-480\\4x=480\\x=480/4\\\\x=120\ livros

 

TOTAL DE LIVROS= 120 LIVROS

2 5 2