Caden had 296 more erasers than Oliver at first. Then Caden bought 49 more erasers. In the end, Caden has 4 times as many erasers as Oliver.
- How many erasers did Oliver have?
- Find the total number of erasers Caden and Oliver had in the end?
| |
Caden |
Oliver |
Total |
| Before |
1 u + 296 |
1 u |
|
| Change |
+ 49 |
|
|
| After |
1 u + 296 + 49 |
1 u |
5 u |
(a)
Before
Number of erasers that Caden had = 1 u + 296
Number of erasers that Oliver had = 1 u
After
Number of erasers that Caden had = 1 u + 296 + 49 = 4 u
Number of erasers that Oliver had = 1 u
1 u + 296 + 49 = 4u
1 u + 345 = 4 u
4 u - 1 u = 345
3 u = 345
1 u = 345 ÷ 3 = 115
(a)
Number of erasers that Oliver had
= 1 u
= 115
(b)
Number of erasers that Caden and Oliver had in the end
= 4 u + 1 u
= 5 u
= 5 x 115
= 575
Answer(s): (a) 115; (b) 575
