Bryan had 5 times as many green markers as yellow markers. After giving away 3 green markers and buying another 45 yellow markers, he had an equal number of green and yellow markers. How many green markers did Bryan have at first?
| |
Green markers |
Yellow markers |
| Before |
5 u |
1 u |
| Change |
- 3 |
+ 45 |
| After |
5 u - 3 |
1 u + 45 |
The number of green and yellow markers is the same in the end.
5 u - 3 = 1 u + 45
5 u - 1 u = 45 + 3
4 u = 3 + 45
4 u = 48
1 u = 48 ÷ 4 = 12
Number of green markers that Bryan had at first
= 5 u
= 5 x 12
= 60
Answer(s): 60
