SOLUTION: I need to convert a paint that I bought that has 7% of the dye color I want but the shade I like best calls for only 3% dye color. How much pure white needs to be mixed with the 7%

Question 431211: I need to convert a paint that I bought that has 7% of the dye color I want but the shade I like best calls for only 3% dye color. How much pure white needs to be mixed with the 7% to get .7 gallons of the 3%dye paint.
Answer by mananth(16946) (Show Source): You can put this solution on YOUR website!
percent ----------------quantity
White paint 0----------------x gallons
Paint with dye 7----------------0.7-x gallons
Total 3.00% ----------------0.7 gallons

0x+7(0.7-x)=3*0.7
4.9-7x=2.1
-7x=2.1-4.9
-7x=-2.8
/-7
x=0.4 gallons white paint
0.3 gallons 7.00%

RELATED QUESTIONS
After going to the store, they had a special on paint with 7% color included. However,... (answered by ankor@dixie-net.com)

a painter added 2ounces of dye to 1 quart of paint. how many ounces of dye does he need... (answered by Alan3354,josgarithmetic)

How much 7% color paint would I need to add to white paint to get a 3%... (answered by ptaylor)

A receipt calls for 3/5 cup of granola and I only need to make 2/7 of the recepie how do... (answered by stanbon)

Here are some questions that I need answered. 1. How do you find an inequality on a... (answered by Edwin McCravy)

Hi! My question is an expression, that has parenthesis. I need to convert it, so it does... (answered by josgarithmetic)

A recipe calls for 3/4 cups of flour but I only want to make 2/3 how much flour should I (answered by jim_thompson5910)

Good evening I do need help with this problem. hope you could help me. You have a 4... (answered by KMST)

A particular shade of paint is made by mixing 5 parts red paint with 7 parts blue paint. (answered by Mathtut)