A box of granola bars that cost $4 is on sale for "buy 2, get 1 free". What is the true percent of discount on the box of granola

bars to the nearest tenth of a percent?

Janie has $3. she earns $1.20 for each chore she does and can do fractions of chores. she wants to earn enough money to buy a cd for $13.50. write an inequality to determine the number of chores, c, janie could do to have enough money to buy the cd.