Question

you mix 2/5 cup of red paint for every 1/4 cup of blue paint to makw 1 5/8 gallons of purple paint. how much red paint and blue paint do u use

Answer 1

2/5 : 1/4 = 8:5

1 5/8 = 13/8

so,

8/8 c red
5/8 c blue

Answer 2

So you can make a ratio table, then multiply/divide 4/5 and 1/2 as many times as needed to reach the value of 13/8 when adding them. This is my advice to you....hope it helps!! <3