What percent was a television set reduced if it was marked $225 and sold for
$195?

13.33%

Step-by-step explanation:

the television originally had a price of $225, this will be our 100%.

After that, the television was at a price of $195

which means that the amount discounted was:

225 - 195 = 30

so what we must find is what percentage represent that $ 30 with respect to the $ 225

We have the following

quantity       percentage

 $225      ⇒       100%

  $30        ⇒         x

This can be solved by a rule of three, where we multiply the cross quantities and divide by the remaining number:

the percentage the television set was reduced is 13.33%

answer;

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1/800 is the right answer