Answer :
A pack of 4 toliet paper rolls is a better deal because it is better to get 2 packs 4 toilet rolls cost for £1.96 than 9 for £4.23.
1.96 times 2 is 3.92, so it is better to get the toilet rolls cost for £1.96
1.96 times 2 is 3.92, so it is better to get the toilet rolls cost for £1.96