Exam 1: General Mathematics

Correct Answer:

Verified

a. $100 \mathrm{~mL} \times 4 \text { times per day }=400 \mathrm{~mL} \text { of solution needed }$ b. Know $\quad$ $\quad$ Want to Know
$1: 4=x: 400$
$4 x=400$
$x=100 \mathrm{~mL}$ of hydrogen per oxide needed

Proof: $1 \times 400=400$
$\quad$ $\quad$ $4 \times 100=400$ c. $400 \mathrm{~mL}$ total needed
$\underline {-100 \mathrm{~mL} }$ hydrogen peroxide

$300 \mathrm{~mL}$ of sterile NS added to make $400 \mathrm{~mL}$ of $\frac{1}{4}$ strength solution

Correct Answer:

Verified

a. $10 \times 2 \text { times per day }=20 \mathrm{~mL} \text { of } 70 \% \text { Betadine solution should be prepared. }$ b. Know $\quad$ $\quad$ Want to Know
$0.70: 1=x: 20 \mathrm{~mL}$
$x=0.70 \times 20=14.00$
$x=14 \mathrm{~mL}$ of Betadine needed


Proof: $0.70 \times 20=14.00$
$\quad$ $\quad$$1 \times 14=14$ c. $20 \mathrm{~mL}$ needed
$\underline { -14 ~ ~ mL }$ Betadine
$\quad$$6 \mathrm{~mL}$ NS added to make $20 \mathrm{~mL}$ of a $70 \%$ Betadine solution