37 of the pupils go to school by walking.
14 of the remaining pupils go to school by cycling and
13 of the rest go by train to school. The remaining pupils go to school by car. The number of pupils who go to school by car is 144 fewer than those who go to school by walking. What is the enrolment of the school?
By walking |
Remaining pupils |
3 |
4 |
|
By cycling |
By train |
By car |
|
1 |
3 |
|
|
1 |
2 |
3 u |
1 u |
1 u |
2 u |
Number of more pupils who go by car than by walking
= 3 u - 1 u
= 2 u
2 u = 144
1 u = 144 ÷ 2 = 72
Total enrolment of the school
= 7 u
= 7 x 72
= 504
Answer(s): 504