There was an equal number of pink and green marbles in a packet at first. After 17 green marbles were taken out and 43 pink marbles were added into the packet, there was
17 as many green marbles as pink marbles. Find the number of green marbles in the packet at first.
| |
Pink marbles |
Green marbles |
| Before |
7 u - 43 |
1 u + 17 |
| Change |
+ 43 |
- 17 |
| After |
7 u |
1 u |
The number of pink and green marbles in the packet is the same at first.
7 u - 43 = 1 u + 17
7 u - 1 u = 17 + 43
6 u = 60
1 u = 60 ÷ 6 = 10
Number of green marbles at first
= 1 u + 17
= 10 + 17
= 27
Answer(s)27
