Gillian had 228 erasers. Andy had 14 of what Gillian had. After Gillian used some of his erasers and Andy used 13 of his erasers, Gillian had 12 as many erasers left as Andy.
- How many erasers did Andy have at first?
- How many erasers did Gillian use?
|
Gillian |
Andy |
Before |
228 |
57 |
Change |
- ? |
- 19 |
After |
19 |
38 |
(a)
Number of erasers that Andy had at first
=
14 x 228
= 57
(b)
Number of erasers that Andy used
=
13 x 57
= 19
Number of erasers that Andy had left
= 57 - 19
= 38
Number of erasers that Gillian had left
=
12 x 38
= 19
Number of erasers that Gillian used
= 228 - 19
= 209
Answer(s): (a) 57; (b) 209