(a) This is a recipe to make ice cream for 6 people:
270 ml cream
270 ml milk
100 g sugar
4 egg yolks
Tom makes ice cream for 10 people.
(i) Work out how much milk he uses.
(ii) The mass of all the ingredients Tom uses is 1100 g. After heating, this mass reduces by 15%. Find the mass after heating.
(iii) Tom lets the mixture cool to 5°C, then freezes it to -18°C. Find the temperature difference.
(b) (i) A machine fills 25,920 tubs of ice cream in 8 hours. Work out how many tubs it fills in 1 minute.
(ii) A pack contains 6 tubs, 120 packs on a tray, and 24 trays on a truck. Work out how many tubs are on the truck.
(c) Mario sells ice creams in five flavours.
The table shows the relative frequency of some of the ice cream flavours Mario sells.
Mario sells three times as many chocolate ice creams as banana ice creams.
(i) Complete the table.
(ii)One week Mario sells 450 ice creams. Find how many strawberry ice creams Mario expects to sell.
(iii) The probability a customer is adult is 0.7.
- (a) Complete the tree diagram.
- (b) Find the probability first two customers are adults.
