A small packet of crisps cost 22p and a large packet of crisps cost 42p. Bob buys 50 small packets of crips. Matt buys 30 large packets of crips. How much more does Matt spend than Bob
Matt spends 30 x 42 = 1260 p
Bob buys 50 x 22 = 1100 p
You should be able to do it from here....
