To purchase a ticket, one has to pay $7.25.
To purchase a drink & popcorn, one has to pay $5.75.
Clearly, to get the total cost for the group of 4 friends, we have to
Now, here comes the Maths. to save your labour!
A Well-known Property of Numbers,
called "The Distributive Property" says that,
Observe that, to get the total cost from
perform multiplication twice, but, by the Distributive Property as
shown in the last eqn., we have to multiply only once.