Joelle had 300 erasers. Bryan had 12 of what Joelle had. After Joelle used some of his erasers and Bryan used 12 of his erasers, Joelle had 23 as many erasers left as Bryan.
- How many erasers did Bryan have at first?
- How many erasers did Joelle use?
| |
Joelle |
Bryan |
| Before |
300 |
150 |
| Change |
- ? |
- 75 |
| After |
50 |
75 |
(a)
Number of erasers that Bryan had at first
=
12 x 300
= 150
(b)
Number of erasers that Bryan used
=
12 x 150
= 75
Number of erasers that Bryan had left
= 150 - 75
= 75
Number of erasers that Joelle had left
=
23 x 75
= 50
Number of erasers that Joelle used
= 300 - 50
= 250
Answer(s): (a) 150; (b) 250
