Question

7. Five friends share the cost of a chocolate chip cookie cake. The cost includes theprice of the cookie cake and $2.50 for extra sprinkles (because why not?). If theyeach pay $3.90 what was the cost of the chocolate chip cookie cake?

Answer 1

Given that the five friens paid $3.90 each, it means that the total amount that they paid is

3.9 * 5 = $19.5

Let x represent the cost of the chocolate chip cookie cake. Given that the cost includes the price of the cookie cake and $2.50 for extra sprinkles, it means that

x + 2.50 = 19.5

x = 19.5 - 2.5

x = 17

The cost of the chocolate chip cookie cake is $17