Answer:
Some hot dogs come in packages of 8.
A baker of hot dog buns package 7 hot dog buns to a package.
So, on every hot dog the baker will earn have a profit of price of one hot dog
Suppose, baker bought 8 packets of packages of 8 hot dogs.
He will have profit of 8 hot dogs
Because if he is selling 8 packets of packages of 7 that means he will earn profit of price of 8 hot dogs.