Find the quotient if the sum of 2/5 and 7/15 is divided by the difference between 7/18 and 2/15

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?

16 more than the product of 5 and p

What is the solution for 6 - 7/8? explain the steps.