Martin went to a store to buy a new television set. He decided to spend no more than $1,000 and the sales clerk offered him the TV for $100 less and an additional 20% off. How much lower was the price of the television than the amount Martin decided to spend?
Stream of thoughts:
280
The seller has offered him the TV for 1000 - 100 = $900.

The discount on the television was 900 * 20 / 100 = $180.

The final price of the television is therefore 900 - 180 = $720.

Martin was able to save 1000 - 720 = $280.

.

Thus, the answer is 280