SweetShop Solution
(a) How much change did Nathan get from his £1?  
   
3 lollypops cost 84p (Liam)
So 1 lollypop costs 28p  
   
A choco bar, a mini egg and a chew cost 61p (Judy)
   
So a choco bar, a mini egg, a chew and a lollypop cost 89p (28p + 61p)  
   
So Nathan receives 11p change  
   
(b) Suggest a way in which Nathan could spend all his money.  
   
A choco bar, a mini egg and a lollypop cost 54p (Kenny)
So a choco bar and a mini egg cost 26p (54p – 28p)
   
A choco bar, a mini egg and a chew cost 61p (Judy)
So 1 chew costs 35p (61p – 26p)
   
A mini egg, a lollypop and a chew cost 80p (Mandy)
So 1 mini egg costs 17p (80p – 28p – 35p)
   
A choco bar, a mini egg and a chew cost 61p (Judy)
So 1 choco bar costs 9p (61p – 17p – 35p)
   
So 8 choco bars and 1 lollypop cost £1 (72p + 28p)