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PHARMACY TECH CALCULATIONS
QUESTIONS AND ANSWERS 2025
What volume of a 2% erythromycin solution can be made from
15g of erythromycin powder? - correct answer- 750 ml
How many ml of 95% of ethyl alcohol should be added to sterile
water for injection to make 1/2 liter of a 40% ethyl alcohol
solution? - correct answer- 210 ml
The recommended dose of drug XYZ is 10 mg/kg/day. What is
the total daily drug XYZ for a 48.4-lb patient? - correct answer-
220 mg
What volume of Digoxin 0.5 mg/2 ml injection will deliver a dose
of 0.125 mg. - correct answer- 1/2 ml
The initial dose of aminophylline for a non-smoking adult is 0.7
mg/kg/hr for 12 hours. How many ml of an IV solution
containing 400 mg per 100 ml would be required for a 154 lbs
male over this 12 hour period? - correct answer- 147 ml
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What would be the selling price of Hydrocortisone cream 1% 30
gm if it costs $7.00 and you want a 50% mark up? - correct
answer- $10.50
An order reads "Acetaminophen 325 mg Pr q4h prn". What
dosage form should be dispensed? - correct answer-
Suppositories
Consider the following Rx: Dilantin 100 mg #180 Sig:1 cap po
tid refill x3 If the patient pays a $7.00 copay for a 30 day supply,
what quantity should be dispensed for the patient to pay no
more than the $7.00 copay? - correct answer- 90 caps
Determine the flow rate of an IVPB containing 120 ml of
gentamicin, if the solution is to be infused over a 1 hour period
and the administration set is calibrated to deliver 10 drops per
ml. - correct answer- 20 gtts/min
The doctor writes a prescription for Na Heparin 20,000 units in
500 ml N.S. Infuse over 8 hours. What is the flow rate in ml/hr?
- correct answer- 63 ml in 1 hr
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You receive a prescription for Amoxicillin suspension 125 mg/5
ml, 1.5 tsp TID x 10 days. The appropriate quantity to dispense
would be: - correct answer- 225 ml
Cefzil suspension is available in a concentration of 125 mg/5
ml. How many ml are required for a 500 mg dose? - correct
answer- 20 ml
1/2 tablespoons is equivalent to how many ml? - correct
answer- 7.5 ml
The approximate size container for the dispensing of 180 ml of
liquid medication would be? - correct answer- 6 ounces
You receive an order for Ceclor suspension (125 mg/5 ml) with
a dose of 250 mg TID for 10 days. How many milliliters do you
need to dispense? - correct answer- 300 ml
A pharmacy wants to mark up a product by thirty percent. How
much would an item cost with mark up, if it's original cost was
$4.50? - correct answer- $5.85
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To prepare 400 ml of a 40% (w/v) solution of sodium
bicarbonate, how many grams of solute are needed? - correct
answer- 16o gm
What is the Latin abbreviation for "after meals"? - correct
answer- pc
You receive an order to prepare 250 mg of dobutamine in a
100-ml pump cassette with NS as the diluent. Dobutamine is
available as a 12.5-mg/ml solution. How many milliliters of
dobutamine do you need to prepare this prescription? - correct
answer- 20 ml
Using Clark's Rule, what is the dose of drug for an eight-year-
old boy weighing 50 pounds? (The normal adult dose is 300
mg.) - correct answer- 100 mg
What volume of pediatric digoxin injection 0.1 mg/ml is required
for a 50 mcg dose? - correct answer- 0.5 ml
Thirty-four degrees Celsius (34 degrees C) would be how many
degrees Fahrenheit? - correct answer- 93.2 degrees F
PHARMACY TECH CALCULATIONS
QUESTIONS AND ANSWERS 2025
What volume of a 2% erythromycin solution can be made from
15g of erythromycin powder? - correct answer- 750 ml
How many ml of 95% of ethyl alcohol should be added to sterile
water for injection to make 1/2 liter of a 40% ethyl alcohol
solution? - correct answer- 210 ml
The recommended dose of drug XYZ is 10 mg/kg/day. What is
the total daily drug XYZ for a 48.4-lb patient? - correct answer-
220 mg
What volume of Digoxin 0.5 mg/2 ml injection will deliver a dose
of 0.125 mg. - correct answer- 1/2 ml
The initial dose of aminophylline for a non-smoking adult is 0.7
mg/kg/hr for 12 hours. How many ml of an IV solution
containing 400 mg per 100 ml would be required for a 154 lbs
male over this 12 hour period? - correct answer- 147 ml
,2 | Page
What would be the selling price of Hydrocortisone cream 1% 30
gm if it costs $7.00 and you want a 50% mark up? - correct
answer- $10.50
An order reads "Acetaminophen 325 mg Pr q4h prn". What
dosage form should be dispensed? - correct answer-
Suppositories
Consider the following Rx: Dilantin 100 mg #180 Sig:1 cap po
tid refill x3 If the patient pays a $7.00 copay for a 30 day supply,
what quantity should be dispensed for the patient to pay no
more than the $7.00 copay? - correct answer- 90 caps
Determine the flow rate of an IVPB containing 120 ml of
gentamicin, if the solution is to be infused over a 1 hour period
and the administration set is calibrated to deliver 10 drops per
ml. - correct answer- 20 gtts/min
The doctor writes a prescription for Na Heparin 20,000 units in
500 ml N.S. Infuse over 8 hours. What is the flow rate in ml/hr?
- correct answer- 63 ml in 1 hr
,3 | Page
You receive a prescription for Amoxicillin suspension 125 mg/5
ml, 1.5 tsp TID x 10 days. The appropriate quantity to dispense
would be: - correct answer- 225 ml
Cefzil suspension is available in a concentration of 125 mg/5
ml. How many ml are required for a 500 mg dose? - correct
answer- 20 ml
1/2 tablespoons is equivalent to how many ml? - correct
answer- 7.5 ml
The approximate size container for the dispensing of 180 ml of
liquid medication would be? - correct answer- 6 ounces
You receive an order for Ceclor suspension (125 mg/5 ml) with
a dose of 250 mg TID for 10 days. How many milliliters do you
need to dispense? - correct answer- 300 ml
A pharmacy wants to mark up a product by thirty percent. How
much would an item cost with mark up, if it's original cost was
$4.50? - correct answer- $5.85
, 4 | Page
To prepare 400 ml of a 40% (w/v) solution of sodium
bicarbonate, how many grams of solute are needed? - correct
answer- 16o gm
What is the Latin abbreviation for "after meals"? - correct
answer- pc
You receive an order to prepare 250 mg of dobutamine in a
100-ml pump cassette with NS as the diluent. Dobutamine is
available as a 12.5-mg/ml solution. How many milliliters of
dobutamine do you need to prepare this prescription? - correct
answer- 20 ml
Using Clark's Rule, what is the dose of drug for an eight-year-
old boy weighing 50 pounds? (The normal adult dose is 300
mg.) - correct answer- 100 mg
What volume of pediatric digoxin injection 0.1 mg/ml is required
for a 50 mcg dose? - correct answer- 0.5 ml
Thirty-four degrees Celsius (34 degrees C) would be how many
degrees Fahrenheit? - correct answer- 93.2 degrees F
