# Three examples per-mille

A. Calculate 1.5 ‰ from 4.5 liters of blood. Express the result in milliliters.
B. Calculate three ‰ from € 50,000.
C. The tray they brought breakfast to the landlord's bed is made of an alloy that contains 830 ‰ of silver. How much silver did they use on it if the tray weighed 390 g?

Correct result:

a =  6.75 ml
b =  150
c =  323.7 g

#### Solution:

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