Question

you like to watch at the local cinema. you have to payment options A is to hit a discount which will cost 160 a d then 20 per movie options b pays 40 per movie what will the total cost of the two options

Answer 1

Let x be the number of movies you watch.

Option A will cost you:

`20x+160`

Option B will cost you:

`40x`

The two options will cost the same when:

`\begin{gathered} 20x+160=40x \\ 160=40x-20x \\ 20x=160 \\ x=(160)/(20) \\ x=8 \end{gathered}`

Therefore, after 8 movies the two options will cost the same.