If you had 25 red marbles and 50 green marbles. How many more green marbles would you have to add so the ratio is 1red marble to every 6 green marbles?

Find the volume of the solid generated when the region bounded by y= x and y= 4√x is revolved about the x-axis the volume of the solid is: (type an exact answer cubic units)

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?

Julius sold five times as many computers as sam sold last year. in total, they sold 78 computers. how many computers did julius sell?