Flynn, Owen and Dylan had a total of 551 erasers at first. After a week, the number of Flynn's erasers became 4 times the number of erasers he had at first. The number of Owen's erasers decreased by 239. Dylan had half as many erasers as he had at first. In the end, the three boys had the same number of erasers.
- How many erasers did Dylan have at first?
- What was the total number of erasers that the three boys had in the end?
|
Flynn |
Owen |
Dylan |
Total |
Before |
1 u |
4 u + 239 |
8 u |
|
Change |
x 4 |
- 239 |
x 12 |
|
After |
4 u |
4 u |
4 u |
12 u |
(a)
Total number of erasers at first
=
1 u + 4 u + 239 + 8 u
= 13 u + 239
13 u + 239 = 55113 u = 551 - 23913 u = 312
1 u = 312 ÷ 13 = 24 Number of erasers that Dylan had at first
= 4 u ÷
12= 4 u x
21= 8 u = 8 x 24 = 192(b)Total number of erasers that the three boys had at the end = 12 u = 12 x 24 = 288 Answer(s): (a) 192; (b) 288