# ratio!

• Apr 13th 2008, 04:38 AM
mathshelper24
ratio!
to make pink paint you mix red and white paint in the ratio 1:4.

how much of each color do you need to make 40 ml of pink paint?
• Apr 13th 2008, 04:42 AM
janvdl
Quote:

Originally Posted by mathshelper24
to make pink paint you mix red and white paint in the ratio 1:4.

how much of each color do you need to make 40 ml of pink paint?

$\frac{1}{5}$ parts red paint , $\frac{4}{5}$ parts white paint.
• Apr 13th 2008, 04:49 AM
Moo
Hello,

Ok, i'll try to explain^^

A ratio 1:4 means that for x red paint, you will have 4x white paint.

This means that for 1 liter of red paint, you will have 4 liters of white paint. The total is 5 liters.

Now, you're looking for x such as x+4x make 40mL of pink paint.

So 5x=40mL

-> x=... ? quantity of red paint
-> 4x=... ? quantity of white paint
• Apr 13th 2008, 05:11 AM
mathshelper24
Quote:

Originally Posted by Moo
Hello,

Ok, i'll try to explain^^

A ratio 1:4 means that for x red paint, you will have 4x white paint.

This means that for 1 liter of red paint, you will have 4 liters of white paint. The total is 5 liters.

Now, you're looking for x such as x+4x make 40mL of pink paint.

So 5x=40mL

-> x=... ? quantity of red paint
-> 4x=... ? quantity of white paint

thanks but i know how to work it out but i need to know if i got the right answer! could you tell me what you got?
• Apr 13th 2008, 05:14 AM
janvdl
Quote:

Originally Posted by mathshelper24
thanks but i know how to work it out but i need to know if i got the right answer! could you tell me what you got?