Students investigated the prices in dollars ($) of 1 litre bottles of a certain drink at 24 shops in a town and at 16 shops in surrounding villages. Denoting the town prices by t and the village prices by v, the students’ data are summarised by the totals Σ­(t −1.1) = 1.44 and ­Σ(v −1.2) = 0.56.

Find the mean price of 1 litre of this drink at all the shops at which the students collected their data.