Answer:
£136
Step-by-step explanation:
To find the total cost, add up the costs. You can use the properties of addition and multiplication to simplify the process, if you like.
The sum of the costs of the four tickets is ...
£40 +£40 +£28 +£28 = £136 . . . . total cost of entry
You can group these and make use of the distributive property
= (£40 +£40) +(£28 +£28) = 2(£40) +2(£28) = £80 +£56 = £136
And you can group them differently:
= (£40 +£28) +(£40 +£28)
= 2(£40 +£28) = 2(£68) = £136
