Get expert advice and community support on IDNLearn.com. Our community is here to provide the comprehensive and accurate answers you need to make informed decisions.

There are 4 more girls in Mrs. Pitt's class than Mr. Brown's class.  Five girls moved from Mrs. Pitt's class to Mr. Brown's class.  Now there are twice as many girls in Mr. Brown's class as there are in Mrs. Pitt's.  How many girls were in Mr. Brown's class to begin with?