$\"\"$

Koto purchased food for herself and her friends.

She bought $\"\"$ cheeseburgers for $\"\"$ each, $\"\"$ french fries for $\"\"$ each and $\"\"$ drinks for $\"\"$ .

Write and evaluate the expression to find how m,uch money the books cost :

$\"\"$ (Orginal expression)

$\"\"$ (Multiply)

$\"\"$ (Simplify)

Therefore, the total cost of food is $\"\"$ .

$\"\"$

Total cost of food is $\"\"$ .