$21.$ In order to better predict medical care needs, a medical office documented the number of walk$-$ins they received for each department. The following table lists the $747$ walk$-$ins received by a medical office over a three$-$month trial period.

Department

Number of Walk$-$Ins Received

Month #$1$

Month #$2$

Month #$3$

Pediatrics

$76$

$89$

$71$

Sports Medicine

$38$

$27$

$41$

Optometry

$45$

$53$

$58$

Dentistry

$14$

$9$

$20$

Internal Medicine

$67$

$79$

$60$

According to the above information, the Pediatrics and Dentistry Departments accounted for what percentage of total walk$-$ins for the three$-$month period?

a$.6\%$

b$.32\%$

c$.37\%$

d$.60\%$

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$22.$ The Training division used to charge $$215\mathrm{.}50$ per employee for the required training sessions. However, due to an increase in the price of training materials, the price per employee was raised to $$301\mathrm{.}70$ for the training sessions. By what percentage did the price of training per employee increase?

a$.17\%$

b$.29\%$

c$.71\%$

d$.40\%$

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$23.$ A department is preparing to send out a new training opportunity memo to a random sample of $39\%$ of its analysts and $58\%$ of its managers. How many memos is the department distributing if there are $548$ analysts and $57$ managers?

a$.214$

b$.247$

c$.340$

d$.587$