Shiyun has 2 times as many pens as Yoko. Yoko has
38 as many pens as Lucy. If the three of them have a total of 153 pens, how many pens does Shiyun have?
Shiyun |
Yoko |
Lucy |
2x3 |
1x3 |
|
|
3x1 |
8x1 |
6 u |
3 u |
8 u |
The number of pens that Yoko has is repeated. Make the number of pens that Yoko has the same. LCM of 1 and 3 is 3.
Total number of pens that the three of them have
= 6 u + 3 u + 8 u
= 17 u
17 u = 153
1 u = 153 ÷ 17 = 9
Number of pens that Shiyun has
= 6 u
= 6 x 9
= 54
Answer(s): 54