Question

1. an adult patient is given phenobarbital to control seizures from a head injury. in one day, she receives grain (gr) ⅙, gr ½, gr ¼, gr ⅛, and gr ¹/₃₂. how many grains of phenobarbital were given to the patient?
2. a dental assistant (da) is developing dental radiographs (x - rays). he follows the time chart recommended for the speed film he is using. what is the total time required to complete the developing process?

developing process	time required
rinse	½ minute
fix solution	3 ¼ minutes
final wash	20 minutes

1. a dietetic technician (dt) helps a patient calculate the number of grams (g) of saturated fat. if the patient ate 1 slice of bacon with 1¼ g, 1 poached egg with 1½ g, 1 cup milk with 2¾ g, 1 biscuit with 1¼ g, and 1 teaspoon margarine with ½ g, how many grams of saturated fat did the patient eat?
2. a radiologic technologist (rt) is evaluating the filtering effect of aluminum in preventing the lower energy radiation beams from reaching the patient. he knows that there is ½ millimeter (mm) of filtration inside the tube to provide inherent or built - in filtration.

a. if 1½ mm of aluminum is added to the outside of the tube, will this create the ideal beam filtration of 2½ mm?
b. if not, how much more aluminum would have to be added?

Explanation:

10.

Step1: Add the amounts of phenobarbital

$\frac{1}{6}+\frac{1}{2}+\frac{1}{4}+\frac{1}{15}+\frac{1}{80}$
First, find a common - denominator. The least common multiple of 6, 2, 4, 15, and 80 is 240.
$\frac{1\times40}{6\times40}+\frac{1\times120}{2\times120}+\frac{1\times60}{4\times60}+\frac{1\times16}{15\times16}+\frac{1\times3}{80\times3}=\frac{40 + 120+60 + 16+3}{240}=\frac{239}{240}\approx0.996$ grains

Step1: Add the times for each step

$2\frac{1}{2}+\frac{1}{2}+3\frac{1}{4}+20$
Convert the mixed - numbers to improper fractions: $2\frac{1}{2}=\frac{5}{2}$, $3\frac{1}{4}=\frac{13}{4}$
$\frac{5}{2}+\frac{1}{2}+\frac{13}{4}+20=\frac{10 + 2+13}{4}+20=\frac{25}{4}+20$
$=\frac{25}{4}+\frac{80}{4}=\frac{25 + 80}{4}=\frac{105}{4}=26\frac{1}{4}$ minutes

Step1: Add the amounts of saturated fat

$1\frac{1}{4}+1\frac{1}{2}+2\frac{3}{4}+1\frac{1}{4}+\frac{1}{2}$
Convert to improper fractions: $1\frac{1}{4}=\frac{5}{4}$, $1\frac{1}{2}=\frac{3}{2}$, $2\frac{3}{4}=\frac{11}{4}$
$\frac{5}{4}+\frac{3}{2}+\frac{11}{4}+\frac{5}{4}+\frac{3}{2}$
$=\frac{5+6 + 11+5+6}{4}=\frac{33}{4}=8\frac{1}{4}$ grams

Answer:

$\frac{239}{240}$ grains

11.