Peter and Perry have some white markers and some silver markers. The number of silver markers Peter has is equal to the number of white markers Perry has. ¹₃ of Peter's markers are white and ⁵₆ of Perry's markers are silver. There are a total of 18 white markers. Find the total number of markers they have.

Peter		Perry		Total
White	Silver	White	Silver
	1x2	1x2
1x1	2x1	1x2	5x2
1 u	2 u	2 u	10 u	15 u

The number of Peter's silver markers and Perry's white markers is the same.

The number of Peter's silver markers is repeated. The number of Perry's white markers is repeated.  Make the number of Peter's silver markers and Perry's white markers the same.  LCM of 2 and 3 is 2.

Number of white markers
= 1 u + 2 u
= 3 u

3 u = 18

1 u = 18 ÷ 3 = 6

Total number of markers
= 1 u + 2 u + 2 u + 10 u
= 15 u
= 15 x 6
= 90

Answer(s): 90