There was an equal number of pink and gold marbles in a packet at first. After 27 gold marbles were taken out and 43 pink marbles were added into the packet, there was
13 as many gold marbles as pink marbles. Find the number of gold marbles in the packet at first.
|
Pink marbles |
Gold marbles |
Before |
3 u - 43 |
1 u + 27 |
Change |
+ 43 |
- 27 |
After |
3 u |
1 u |
The number of pink and gold marbles in the packet is the same at first.
3 u - 43 = 1 u + 27
3 u - 1 u = 27 + 43
2 u = 70
1 u = 70 ÷ 2 = 35
Number of gold marbles at first
= 1 u + 27
= 35 + 27
= 62
Answer(s)62