Two-fifths of the seats in an auditorium that holds 500 people are currently taken. It was found that 1/10 of the seats are broken. How many seats are still available? Let's be accurate as possible.
500 / 2 / 5 = 200 seats are already taken. 500 / 1 / 10 = 50 seats are broken. So 200 + 50 = 250 seats are either taken or broken. Therefore, 500 - 250 = 250 seats are still available.
The answer: 250.