Answer:
There are 80 men on the train.
Step-by-step explanation:
M : W
4 : 5
W : C
10 : 9
As you can see, the units for women is not equal, so I shall multiply the first ratio by 2 so that the units for women is 10.
M : W
8 : 10
Now that everything has the same units, I can put the ratio of men, women and children together:
M : W : C
8 : 10 : 9
Total number of units = 8 + 10 + 9
= 27
27 units = 270
No. of men (8 units) = [tex]\frac{8}{27}[/tex] × 270
= 80
