An internet provider gives a 5% discount if the customer pays before the 25th day of the month. If the monthly internet rate is $50, how much did the customer pay in all for 4 months if he paid every 25th of the month?
The 5% discount amounts to $50 x 5/100 = $
<gadget id="calculator">50*5/100</gadget>
<output>5/2 = around 2.5</output>
2.50.
So the total discount given to the customer for 4 months was $2.50 x 4 = $
<gadget id="calculator">2.5*4</gadget>
<output>10</output>
10.
The customer was supposed to pay $50 x 4 = $
<gadget id="calculator">50*4</gadget>
<output>200</output>
200 in all for 4 months without discount.
Since the customer is entitled to the discount, then he only paid a total of $200 - $10 = $
<gadget id="calculator">200-10</gadget>
<output>190</output>
190 for 4 months.

<result>190</result>