Wanda wrote a children's book. Printing copies of her book cost her $318.70. She also paid $21.98 for online ads. If Wanda sold 40 copies of her book for $12 each, what was her profit?

Respuesta :

Total money spent
= $318.70 + $21.98
= $340.68

Total money earned
= 40 x $12
= $480

Profit
= $480 - $340.68
= $139.32