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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?

Respuesta :

MATHGURU17

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



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