Of the books in a library, 1/3 came from Robbie's collection and 15 came from Marta's. Of the rest, 15 were Elena's 1/5 were Winfield's, and 5 were purchased from the bookstore. How many book are there in the library?

Answer 1

0.333x + 15 + 15 + 0.2x + 5 = x

0.533x + 35 = x

35 = x - 0.533x

35 = 0.467x

75 = x

Answer 2

I have a question. It says 1/5 of the remainder was from Winfield, so why would it be 0.2x?

Answer 3

Thanks 4 the help! Also, to Anonymous, 1/5 = 2/10 = 20/100 = 0.2. :))

Answer 4

It says 1/5 OF THE REMAINDER though.

Answer 5

I got 60.
x*1/3 + 15 + 15 + 1/5*[x-(x*1/3+15)] + 5 = x
When you simplify you get 60?
I am not sure if I am right.

Answer 6

Yuh it'z 60