Bullet Train J and Bullet Train K had a total of 105 passengers. When 16 passengers from Bullet Train J moved to Bullet Train K, Bullet Train J had 2 times as many passengers as Bullet Train K. How many passengers were there in Bullet Train J at first?
| |
Bullet Train J |
Bullet Train K |
Total |
| Before |
2 u + 16 |
1 u - 16 |
105 |
| Change |
- 16 |
+ 16 |
|
| After |
2 u |
1 u |
105 |
Total number of passengers
= 1 u + 2 u
= 3 u
3 u = 105
1 u = 105 ÷ 3 = 35
Number of passengers in Bullet Train J at first
= 2 u + 16
= 2 x 35 + 16
= 70 + 16
= 86
Answer(s): 86
