Question: To make a yellow score mixture, Taylor has to combine white and black scores in the ratio of 7:6. If she got 78 yellow scores, what's 2/3 of the difference between the number of black and white scores she used? Think carefully first, then make a decision:
The total ratio representing the yellow scores that Taylor got is 7 + 6 = 13. The difference in the ratio between the number of black and white scores Taylor used is 7 - 6 = 1. The fraction representing the difference in the ratio between the number of black and white scores Taylor used is 1 / 13, representing 1 / 13 * 78 = 6. 2 / 3 of the difference between the number of black and white scores Taylor used is 2 / 3 * 6 = 4. So the answer is 4.