Alan and Dina, are in a candy shop. They are looking to buy liquorice straps. Alan has a demand curve for liquorice straps of P=10-2Q. Dina has a demand curve for liquorice straps of P=14-3Q. If the price is $2 per strap, how many liquorice straps do they buy?

halp.
more as well, but i don't get any of it.