There was an equal number of blue and gold marbles in a packet at first. After 24 gold marbles were taken out and 46 blue marbles were added into the packet, there was
18 as many gold marbles as blue marbles. Find the number of gold marbles in the packet at first.
|
Blue marbles |
Gold marbles |
Before |
8 u - 46 |
1 u + 24 |
Change |
+ 46 |
- 24 |
After |
8 u |
1 u |
The number of blue and gold marbles in the packet is the same at first.
8 u - 46 = 1 u + 24
8 u - 1 u = 24 + 46
7 u = 70
1 u = 70 ÷ 7 = 10
Number of gold marbles at first
= 1 u + 24
= 10 + 24
= 34
Answer(s)34