Painter 83225
A painter needs to mix yellow and red paint in a ratio of 3:7. How many liters of red paint must he add to 21 liters of yellow paint?
Correct answer:

Tips for related online calculators
You need to know the following knowledge to solve this word math problem:
basic operations and conceptsUnits of physical quantitiesGrade of the word problem
Related math problems and questions:
- The painter
For the painter to get the desired color, he must mix green and yellow in a ratio of 4:7. If it has 28 l of green color, how many liters of yellow should he add? How many liters of mixed color does he get?
- Orange colour
For the painter to get orange, he has to mix yellow and red in a ratio of 3:4. If he used 8 liters of red, how many liters of orange did he mix?
- Markus painter
Markus used ¾ liter of paint to cover 10 ½ square meters of wall. How many liters of paint are needed to cover 12 ¼ square meters of the wall?
- Mac painter
Mac is mixing red and white paint to make pink for his candy painting. He uses 1/4 ounces of red paint and 2/3 ounces of white paint. How many ounces of paint did he use?
- White paint
A painter needs 4 1/2 gallons of white paint. He has 1 1/4 gallons of white paint in his truck and another 3/6 gallons of white paint in a storage room. How many more gallons of white paint does the painter need?
- Marbles 82974
The bag has 5 red, 7 white, 10 yellow, and 6 black balls. At least how many marbles must be drawn from the bag to ensure that there will be 3 yellow ones among the drawn balls?
- Robin
Robin needs 3 1/4 meters long of red lace, 5 meters of yellow lace, and 2 1/2 meters of pink lace for her project. How many laces does she need?