3rd grade math\
posted by mythreyee .
A hlaf dozen hair clip cost 43.90. maria wants to buy 4 hair clips. how much will she pay for them?

If 6 hair clips cost $43.90
Then one hair clip will cost 43.90 divided by 6.
After you divide, then multiply by 4. 
I answered this a few minutes ago.
http://www.jiskha.com/display.cgi?id=1365541945