Mark had 87 coins more than Ethan at first. After Mark had given away 135 of his coins to Carl, Ethan had four times as many coins as Mark. Find the number of coins Mark had at first.
|
Mark |
Ethan |
Comparing between Mark and Ethan |
87 more |
|
Before |
1 u + 135 |
4 u |
Change |
- 135 |
|
After |
1 u |
4 u |
Mark had 87 coins more than Ethan at first.
If 87 more marbles is given to Ethan at first, both will have the same number of marbles.
4 u + 87 = 1 u + 135
4 u - 1 u = 135 - 87
3 u = 48
1 u = 48 ÷ 3 = 16
Number of coins that Mark has at first
= 1 u + 135
= 16 + 135
= 151
Answer(s): 151