Bullet Train D and Bullet Train E had a total of 87 passengers. When 14 passengers from Bullet Train D moved to Bullet Train E, Bullet Train D had 2 times as many passengers as Bullet Train E. How many passengers were there in Bullet Train D at first?
| |
Bullet Train D |
Bullet Train E |
Total |
| Before |
2 u + 14 |
1 u - 14 |
87 |
| Change |
- 14 |
+ 14 |
|
| After |
2 u |
1 u |
87 |
Total number of passengers
= 1 u + 2 u
= 3 u
3 u = 87
1 u = 87 ÷ 3 = 29
Number of passengers in Bullet Train D at first
= 2 u + 14
= 2 x 29 + 14
= 58 + 14
= 72
Answer(s): 72
