Tom cannot afford a normal doctor, so he goes to a discount clinic that is 70% cheaper.  It takes two visits, though, instead of 1.  A normal doctor charges $200 for a visit.  How much money does he save?
Let's think step by step.
80
Each of Tom's visits was 200 *.

7 = $140 cheaper.

So he paid $200 - $140 = $60 per visit.

That means he paid $60 * 2 = $120.

So he saved $200 - $120 = $80.

.

The answer: 80