Mary mixes white paint and blue paint in the ratio of 2: 3 she makes 20 litres of paint. how much more blue paint does she need to add to the mixture so that the ratio of white paint to blue paint becomes 1: 7?

2:3=2x:3x

2x+3x=20

5x=20

x=4

BLUE PAINT IN 2:3=12 liters

1:7=x:7x

8x=20

x=20/8

7*20/8=17.5 liters

ANSWER 5.5 liters

y = 0.77(x)

step-by-step explanation:

the jacket retains this value after 23% cut or retains 77% of original value. plug original 87 jacket price for x and the remaining value should be y.