Recap - Simple Calculations

Part of the Fundamentals section of Coddy's PHP journey — lesson 21 of 71.

Challenge

Easy

Read three numbers from input: basePrice, taxPercent, and quantity.

Calculate the final total by performing the following steps:

Start with the base price
Add the tax by multiplying the base price by (taxPercent / 100) and adding it to the price
Multiply the result by the quantity
Subtract a flat discount of 15 from the total
Finally, add a shipping fee calculated as quantity ** 2

Print the final total.

Example:

If the inputs are 50, 10, and 2, the output should be 99 because:

Base price: 50
Add 10% tax: 50 + (50 * 10 / 100) = 50 + 5 = 55
Multiply by quantity 2: 55 * 2 = 110
Subtract discount 15: 110 - 15 = 95
Add shipping (2 ** 2 = 4): 95 + 4 = 99

Try it yourself

<?php
// Read input
$basePrice = intval(fgets(STDIN));
$taxPercent = intval(fgets(STDIN));
$quantity = intval(fgets(STDIN));

// TODO: Write your code below
// 1. Start with the base price
// 2. Add the tax (basePrice * taxPercent / 100)
// 3. Multiply by quantity
// 4. Subtract discount of 15
// 5. Add shipping fee (quantity ** 2)

// Output the final total
echo $finalTotal;
?>

Recap - Simple Calculations

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