Answer:
 22 mg/kg to 15.1 mg/kg
Step-by-step explanation:
Given data:
Total acetaminophen for child is 1.5 teaspoon 
which is equal to
 as 80 miligram acetaminophen is taken per 0.5 teaspoon.
 as 80 miligram acetaminophen is taken per 0.5 teaspoon. 
Therefore, acceptable range given as
240 mg per 24 lb - 240 mg per 35 lb 
or 10 mg per lb - 6.86 mg per lb 
As we know that 1 kg = 2.20 lb 

 = 22 mg/kg to 15.1 mg/kg