Cesar's sixth- grade class sorted books in the library. The class sorted 45 books in 90 minutes. Write an equivalent ratio to find how long it would take to sort 120 books.

90 divided by 45 = 2

The class sorts 2 books per minute.
120 books
120 x 2 is 240

240

I don't understand can someone explain is the answer 240 or 2??

well it took him 45:90 (45 books 90 mins)

so all you have to is find out how many books per minute

90/45=2

so books per minute

now do 120 x 2= 240

ratio is now 240:120

CHECK!

divide 240 by 120 and you get 2

45/ 90 = 120/x

1/2 = 120/x

x = 240

I got 240 is that right

Can someone explain

Can someone please explain how to get the answer

4 hours cause it cant be 240 hours

Of you divide 45 and 90 u will get 2 so it tales 2 minutes per book soo 120 x 2=240

240=4 hours