Tina and Vanessa had the same number of pens. After Tina had given away 63 pens, Vanessa had 4 times as many pens as Tina. How many pens did each of them have at first?
| |
Tina |
Vanessa |
| Before |
1 u + 63 |
4 u |
| Change |
- 63 |
|
| After |
1 u |
4 u |
Number of pens that Vanessa had remains unchanged.
Number of pens that Tina and Vanessa had at first is equal.
4 u = 1 u + 63
4 u - 1 u = 63
3 u = 63
1 u = 63 ÷ 3= 21
Number of pens that each of them had at first
= 1 u + 63
= 21 + 63
= 84
Answer(s): 84
