Ghana's PPF under Diminishing Returns Figure 4.3 G 0 R Ice McGraw-HillIrwoin @2003 The McGraw-Hill Companies, Inc, All Rights Reserved.McGraw-Hill/Irwin © 2003 The McGraw-Hill Companies, Inc., All Rights Reserved. 4-3 Ghana’s PPF under Diminishing Returns Cocoa Rice G’ G 0 Figure 4.3