

1) calculate the quantity of each ingredient required to dispense the following prescription :
(then there is a picture of a script with the following)
chloral hydrate 200mg
blackcurrent syup 1 ml
water 0.1ml
syrup to 5ml
mitte 300ml
i dont understand how to work it out ?
and then the next one is even harder ,,,
2)calculate the quantity of each ingredient required to dispense the following prescription :
(then there is a picture of a script with the following)
salicylic acid 2%
yellow soft paraffin 20%
emulsifying oint 18%
hard paraffin 10%
coconut oil 50%
mitte 50g Apply ON
well with this one i dont understand the %s? ? could anyone help me and put it out how im suppose to do these ? many thanks
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