A book costs _currency_ 200 at _shop_ and is sold for _currency_ 250.
What is the profit?
_currency_ 30.
_currency_ 450.
_currency_ 50.
_currency_ 200.
Given that six textbooks each of the same price cost _currency_ 30,000 at _shop_.
The cost in _currency_ of three textbooks is:
_currency_ 25,000.
_currency_ 90,000.
_currency_ 5,000.
_currency_ 15,000.