The first five months Paul paid and in the next seven months he paid 24.
<h3>What is a Discount ?</h3>
Discounts are defined as lowered prices or the sale of an item for less than it would typically cost. The fundamental formula for calculating a discount is to multiply the original price by the given percentage rate in decimal form. We must deduct the discount from the original price to determine the item's sale price. A discount is an amount that is subtracted from the regular price of an item.
Paul represent his plan in the form of equation:

Where x is an amount for the first
months that is paid by Paul after the discount and
is an amount for the next
month after discount.

For the next 7 month:

Therefore, The first
months Paul paid $ 15.50, and in the next
months he paid $ 24.
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