Gem has 3 times as many erasers as Yoko. Yoko has
38 as many erasers as Xandra. If the three of them have a total of 60 erasers, how many erasers does Gem have?
Gem |
Yoko |
Xandra |
3x3 |
1x3 |
|
|
3x1 |
8x1 |
9 u |
3 u |
8 u |
The number of erasers that Yoko has is repeated. Make the number of erasers that Yoko has the same. LCM of 1 and 3 is 3.
Total number of erasers that the three of them have
= 9 u + 3 u + 8 u
= 20 u
20 u = 60
1 u = 60 ÷ 20 = 3
Number of erasers that Gem has
= 9 u
= 9 x 3
= 27
Answer(s): 27