Bullet Train H and Bullet Train J had a total of 112 passengers. When 29 passengers from Bullet Train H moved to Bullet Train J, Bullet Train H had 3 times as many passengers as Bullet Train J. How many passengers were there in Bullet Train H at first?
| |
Bullet Train H |
Bullet Train J |
Total |
| Before |
3 u + 29 |
1 u - 29 |
112 |
| Change |
- 29 |
+ 29 |
|
| After |
3 u |
1 u |
112 |
Total number of passengers
= 1 u + 3 u
= 4 u
4 u = 112
1 u = 112 ÷ 4 = 28
Number of passengers in Bullet Train H at first
= 3 u + 29
= 3 x 28 + 29
= 84 + 29
= 113
Answer(s): 113
