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Calculate sale price taking the final price with discount in PHP

Posted by: admin June 30, 2018 Leave a comment

Questions:

I have a purchase price, then I increase the 20% profit. The problem is that if my supplier makes a 5% discount on the purchase, then I discount that 5% discount at my normal purchase price and this new discount purchase price will boost the 20% profit. But I can not calculate the normal sale price.

Discount: 5%

Profit: 20%

372.93 – Purchase price without discount.

354.29 – Purchase price with discount.

?????? – Sale price.

425.15 – Sale price with Profit.

This is my PHP code:

<?php
 $discount = 5;
 $profit = 1.20;
 $purchase = 372.93;

 $product_purchase = $purchase - ($purchase * ($discount / 100)); // 354.2835
 $product_sale = 0; //??????????
 $product_sale_final = $product_purchase*$profit; //425.1402

 echo "Purchase: ".$product_purchase."<br>";
 echo "Product Sale: ".$product_sale."<br>";
 echo "Product Sale Final: ".$product_sale_final."<br>";
 echo "Discount: ".$discount."%";
?>

I hope someone can help me, I have many hours trying to find the answer. Thank you very much!

Answers: