Question

Gold and silver cost £36.50 per gram and £12.75 per gram respectively.

Tony has bought 50 grams of gold. 70 grams of silver and 25 grams of platinum.
The total cost was £17,017.50

Calculate the cost of platinum per gram .

Answer 1

572 per gram

Explanation:

This seems complicated but is actually really simple. 17,017.50-50x-70y

x is 36.50 for gold and y is 12.75 for silver

what's left is divided by 25 to show the price per gram of platinum