An oil tank holds 420 gallons of oil. On March 1st, the gauge showed it to be 2/3 full. At the end of the month, the tank was 1/6 full. How many gallons of oil were used in March?

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.