Answer :
Final answer:
The total shipping cost calculation of a 10-kilogram package is calculated by adding the fixed shipping cost for 3 kg or less (PHP 30.00) to the additional cost for the weight above 3 kg (7 kg * PHP 4.00/kg = PHP 28.00), which equals to PHP 58.00.
Explanation:
In such word problems, we can first identify the fixed cost and the variable cost associated with weight. The fixed cost here is PHP 30.00. This is the cost to ship a package weighing 3 kilos or less.
However, if the package weighs more than 3 kilos, there is an additional fee called the variable cost, identified here as PHP 4.00 per kilo. To find the cost of shipping a 10-kilogram package, we need to calculate the additional weight above 3 kg first. That is, 10 kg - 3 kg equals 7 kg. We then multiply this 7 kg by the additional fee per kilo: 7 kg * PHP 4.00/kg equals PHP 28.00.
When we add this to the basic shipping cost of PHP 30.00, we get a total shipping cost of PHP 58.00.
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