When we have a set divided by a proportion or ratio, we assume a simultaneous increase for each subset, that is, we get an equation like this:
[tex]T=Ax+Bx+Cx+...[/tex]
Where T is the total number of objects in the set, the letters A, B, C, etc., the proportions or ratios of each subset and x the number of times each set must increase to reach the total T, in this case:
[tex]T=360\\A=13\\B=5[/tex]
Now we solve
[tex]360=13x+5x\\360=(13+5)x\\\frac{360}{18}=x\\ x=20[/tex]
That is, each set must increase 20 times to reach the total seats.
The answer is that there are 13*20=260 seats in economy class and 5*20=100 in business class
If the question is with the data 360360360, 131313 and 555, the problem does not have an exact solution
Answer:
There are 260 seats in economy class and 100 seats in business class.
Step-by-step explanation:
