Bullet Train R and Bullet Train S had a total of 180 passengers. When 17 passengers from Bullet Train R moved to Bullet Train S, Bullet Train R had 4 times as many passengers as Bullet Train S. How many passengers were there in Bullet Train R at first?
|
Bullet Train R |
Bullet Train S |
Total |
Before |
4 u + 17 |
1 u - 17 |
180 |
Change |
- 17 |
+ 17 |
|
After |
4 u |
1 u |
180 |
Total number of passengers
= 1 u + 4 u
= 5 u
5 u = 180
1 u = 180 ÷ 5 = 36
Number of passengers in Bullet Train R at first
= 4 u + 17
= 4 x 36 + 17
= 144 + 17
= 161
Answer(s): 161