Question

Jim has three times as many comic books as Charles. Charles has `2/3` as many books as Bob. Bob has 27 books. How many does Jim have?

Answer 1

Jim has 54 books.

Explanation:

Let's say that Jim has "`x`" books, Charles has "`y`" books, and Bob has `z` books.

Now, according the question, Jim has three times as more comic books as Charles.
In the mathematical language, we write this as `x=3y`, which means "`x` is equal to three times as much as `y` is", `x` being the number of books Jim has and `y` being the number of books Charles has.

Now, apparently Charles has `2/3` times as much as comic books Bob has.
In the mathematical language, we write this as `y=2/3z`, which means "`y` is equal to two by three times as `z` is", `y` being the number of books Charles has and `z` being the number of books Bob has.

Now, apparently Bob has `27` books. In the math language we're gonna say that `z=27`, or "`z` is equal to 27`, where`z# is the number of books Bob has.

So Charles has `2/3` times as many books Bob has, so that means `y=2/3*27` which gives us with `y=18`
We take that `y=18` to `x=3y` which gives us `x=3*18`

So that's how I say that Jim has 54 books. That's a lot of books.