Xandra has 4 times as many erasers as Natalie. Natalie has
25 as many erasers as Abi. If the three of them have a total of 30 erasers, how many erasers does Abi have?
| Xandra |
Natalie |
Abi |
| 4x2 |
1x2 |
|
| |
2x1 |
5x1 |
| 8 u |
2 u |
5 u |
The number of erasers that Natalie has is repeated. Make the number of erasers that Natalie has the same. LCM of 1 and 2 is 2.
Total number of erasers that the three of them have
= 8 u + 2 u + 5 u
= 15 u
15 u = 30
1 u = 30 ÷ 15 = 2
Number of erasers that Abi has
= 5 u
= 5 x 2
= 10
Answer(s): 10
