An artist is using three different colors in a mosaic. The ratio of green to blue to yellow color tiles in the mosaic is 4:6:9. She has 42 blue tiles to use. How many green and yellow tiles does she need?
Since 42 is 7 times more than 6, you should multiply the other numbers by 7 also. So the ratio would be: 28:42:63, in order from green to blue to yellow. She need 28 green tiles, and 63 yellow tiles.
