Bullet Train B and Bullet Train C had a total of 138 passengers. When 27 passengers from Bullet Train B moved to Bullet Train C, Bullet Train B had 2 times as many passengers as Bullet Train C. How many passengers were there in Bullet Train B at first?
| |
Bullet Train B |
Bullet Train C |
Total |
| Before |
2 u + 27 |
1 u - 27 |
138 |
| Change |
- 27 |
+ 27 |
|
| After |
2 u |
1 u |
138 |
Total number of passengers
= 1 u + 2 u
= 3 u
3 u = 138
1 u = 138 ÷ 3 = 46
Number of passengers in Bullet Train B at first
= 2 u + 27
= 2 x 46 + 27
= 92 + 27
= 119
Answer(s): 119
