torkell | Today's maths fail

Today's maths fail comes courtesy of the local Tesco's - can you spot it?

Using the drained weight (dr.wt) of 165g, the correct values are:

65p ÷ 165g = 0.394p/g = £3.94/kg

£1.25 ÷ (2 × 165g) = 125p ÷ 330g = 0.379p/g = £3.79/kg