Nick had 230 more erasers than Eric at first. Then Nick bought 46 more erasers. In the end, Nick has 3 times as many erasers as Eric.
- How many erasers did Eric have?
- Find the total number of erasers Nick and Eric had in the end?
| |
Nick |
Eric |
Total |
| Before |
1 u + 230 |
1 u |
|
| Change |
+ 46 |
|
|
| After |
1 u + 230 + 46 |
1 u |
4 u |
(a)
Before
Number of erasers that Nick had = 1 u + 230
Number of erasers that Eric had = 1 u
After
Number of erasers that Nick had = 1 u + 230 + 46 = 3 u
Number of erasers that Eric had = 1 u
1 u + 230 + 46 = 3u
1 u + 276 = 3 u
3 u - 1 u = 276
2 u = 276
1 u = 276 ÷ 2 = 138
(a)
Number of erasers that Eric had
= 1 u
= 138
(b)
Number of erasers that Nick and Eric had in the end
= 3 u + 1 u
= 4 u
= 4 x 138
= 552
Answer(s): (a) 138; (b) 552
