Ken and Paul have some yellow staplers and some pink staplers. The number of pink staplers Ken has is equal to the number of yellow staplers Paul has. ¹₅ of Ken's staplers are yellow and ⁴₅ of Paul's staplers are pink. There are a total of 10 yellow staplers. Find the total number of staplers they have.

Ken		Paul		Total
Yellow	Pink	Yellow	Pink
	1x4	1x4
1x1	4x1	1x4	4x4
1 u	4 u	4 u	16 u	25 u

The number of Ken's pink staplers and Paul's yellow staplers is the same.

The number of Ken's pink staplers is repeated. The number of Paul's yellow staplers is repeated.  Make the number of Ken's pink staplers and Paul's yellow staplers the same.  LCM of 4 and 5 is 4.

Number of yellow staplers
= 1 u + 4 u
= 5 u

5 u = 10

1 u = 10 ÷ 5 = 2

Total number of staplers
= 1 u + 4 u + 4 u + 16 u
= 25 u
= 25 x 2
= 50

Answer(s): 50