Bill paints murals. he recorded the total amount of white paint that he used for his murals each month
in april, bill used 2/3 of the amount he used in march

fill in the amount of white paint bill used in april

every month liters of white paint used that month
march: 4/5
april: unknown
may: 1/4

the question is how much paint bill used if he used 2/3 of the amount he used in march