I'm giving 20 points! Please help fast! Thank you! How do you determine whether to use a percent, ratio, or rate in any given situation?

Amuffin recipe, which yields 12 muffins, calls for cup of milk for every 1 cups of flour. the same recipe calls for cup of coconut for every cup of chopped apple. to yield a batch of 30 muffins, how much flour will be needed in the mix?

You paid 28.00 for 8 gallons of gasoline. how much would you pay for 15 gallons of gasoline?

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.