The ratio of red counters to blue counters is 9:11. There are y blue counters. Express the number of red counters in terms of y.

Question

I Learned about ratios last year and I completely forget about them.

Answer 1

This is an interesting take on ratios. For every 11 blue, there are 9 red, so the number of red in camparison to y blue is 9y/11.

 

Let's check.

 

If there are 22 blue, 9(22)/11 = 18 red. If we did the work the way you were taught, we'd get 18.

 

Your answer is 9y/11