Tim and Gabriel have some silver markers and some yellow markers. The number of yellow markers Tim has is equal to the number of silver markers Gabriel has. ¹₅ of Tim's markers are silver and ²₃ of Gabriel's markers are yellow. There are a total of 50 silver markers. Find the total number of markers they have.

Tim		Gabriel		Total
Silver	Yellow	Silver	Yellow
	1x4	1x4
1x1	4x1	1x4	2x4
1 u	4 u	4 u	8 u	17 u

The number of Tim's yellow markers and Gabriel's silver markers is the same.

The number of Tim's yellow markers is repeated. The number of Gabriel's silver markers is repeated.  Make the number of Tim's yellow markers and Gabriel's silver markers the same.  LCM of 4 and 5 is 4.

Number of silver markers
= 1 u + 4 u
= 5 u

5 u = 50

1 u = 50 ÷ 5 = 10

Total number of markers
= 1 u + 4 u + 4 u + 8 u
= 17 u
= 17 x 10
= 170

Answer(s): 170