A total of 77 blue markers and black markers are in a container. The ratio of blue markers to black markers was 3 : 8. Some pink markers and yellow markers were put into the container. For every 4 black markers that were already in the container, 5 yellow ones were added. Then, the final number of blue markers and pink markers was ²₃ the final number of black markers and yellow markers. Find the total number of pink and yellow markers.

Pink markers	Blue markers	Black markers	Yellow markers
	3x1	8x1
		4x2	5x2
2x6		3x6
9 u	3 u	8 u	10 u

The number of black markers is repeated.  Make the number of black markers the same.  LCM of 8 and 4 is 8.

The total number of black markers and yellow markers is repeated.  Make the total number of black and yellow markers the same.  LCM of 18 and 3 is 18.

Total number of blue markers and black markers
= 3 u + 8 u
= 11 u

11 u = 77

1 u = 77 ÷ 11 = 7

Total number of pink and yellow markers
= 9 u + 10 u
= 19 u
= 19 x 7
= 133

Answer(s): 133