Jen had the same number of brown, red and white pens at first. After giving some brown and red pens and 70 white pens away, Jen had 187 pens left. There were 5 times as many brown pens as red pens left. The number of white pens left was 11 fewer than the number of brown pens left. How many white pens did she have at first?
| |
Red |
Brown |
White |
Total |
| Before |
5 u + 59 |
5 u + 59 |
5 u + 59 |
|
| Change |
- 4 u - 59 |
- 59 |
- 70 |
|
| After |
1 u |
5 u |
5 u - 11 |
187 |
Jen had the same number of brown, red and white pens at first.
Total number of pens in the end
= 1 u + 5 u + 5 u - 11
= 11 u - 11
11 u - 11 = 187
11 u = 187 + 11
11 u = 198
1 u = 198 ÷ 11 = 18
Number of white pens that Jen had at first
= 5 u - 11 + 70
= 5 u + 59
= 5 x 18 + 59
= 149
Answer(s): 149
