Posted by **Karabo ** on Wednesday, February 13, 2013 at 8:48pm.

An interior decorator must mix red and white paint in the ratio of 2:5 in order to obtain the correct colour pink. If she needs 28 litres of pink paint, calculate how much red paint and how much white paint shem must use to obtain the right colour.

- math -
**Ms. Sue**, Wednesday, February 13, 2013 at 8:51pm
Let x = red paint

2/7 = x/28

- math -
**JJ**, Wednesday, February 13, 2013 at 8:54pm
r = litres of red paint

w = litres of white paint

r + w = 28

r/w = 2/5

so: 5r = 2w which leads to

r = (2/5)(w)

Replace r in the first equation with the (2/5)(w)

that will give you 7/5 w = 28

Can you finish from here?

## Answer this Question

## Related Questions

- math - Barry is getting an early start on this year's summer chores, he started ...
- Math - Last week Gina's art teacher mixed 9 pint of red paint with 6 pints of ...
- Math - Susan wants to use blue, yellow, green, and pink paint to decorate her ...
- Math - How do we solve this problem? If possible change each comparison of red ...
- math - 9. If possible, change each comparison of red paint to white paint to a ...
- Biology - You find 3 trees where each tree gives a different coloured fruit: red...
- Math - Jaime mixes purple paint. She uses six pints of blue paint for every five...
- math - Jaime mixes purple paint. She uses three pints of blue paint for every ...
- Math - A 720ml container holds a mixture of red, yellow, and white paint in a 5:...
- Geometry - Jaime mixes purple paint. She uses three pints of blue paint for ...

More Related Questions