A concert hall has a inner and outer section.

The inner section has seats arranged in rows of 40 and tickets in this section cost $140 ea

The outer section has seats arranged in rows of 70 and tickets in this section cost $60 ea

There are 10 more rows in the inner section than that of the outer section

The seating capacity of the hall is 7000

Using the information given- form equations for the seating capacity for the concert hall?

This is an annoying maths question

Thinking equation

1. 40x+70y=7000

2. 40x+10=70y-10 => 70y-40x=20?