The total mass of a packet of chips and a packet of sweets is 789g. The mass of the same packet of chips and a packet of drink is 229 g lesser than that of a packet of chips and a packet of sweets. Based on the information answer the following questions. What is the mass of a packet of sweets?

• A.  340 g                                    
• B.  320 g
• C.   460 g                                   
• D.   415 g