Total no. of HR,

⇒ 2100 + 2000 + 1800 + 1500 + 1200

⇒ 8600

Let, total no. of employee on Sunday = a

According to PROBLEM,

⇒ a × 35/100 = 2100

⇒ a = 6000

∴ No. of MD and CEO on Sunday = 6000 - 2100 = 3900

Ratio of MD and CEO on Sunday = 1 ? 2

∴ No. of CEO on Sunday = 3900 × 2/3 = 2600

Let, total no. of employee on Saturday = b

According to problem,

$(\Rightarrow b \times 33\frac{1}{3}/100 = 2000)$

⇒ b × 100/300 = 2000

⇒ b = 6000

∴ No. of MD and CEO on Saturday = 6000 - 2000 = 4000

Ratio of MD and CEO on Saturday = 3 ? 7

∴ No. of CEO on Saturday = 4000 × 7/10 = 2800

Let, total no. of employee on Monday = C

According to problem,

$(\Rightarrow c \times 37\frac{1}{2}/100 = 1800)$

⇒ c × 75/200 = 1800

⇒ c = 4800

∴ No. of MD and CEO on Monday = 4800 - 1800 = 3000

Ratio of MD and CEO on Monday = 7 ? 8

∴ No. of CEO on Monday = 3000 × 8/15 = 1600

Let, total no. of employee on Tuesday = d

According to problem,

⇒ d × 30/100 = 1500

⇒ d = 5000

∴ No. of MD and CEO on Tuesday = 5000 - 1500 = 3500

Ratio of MD and CEO on Tuesday = 3 ? 4

∴ No. of CEO on Tuesday = 3500 × 4/7 = 2000

Let, total no. of employee on Friday = x

According to problem,

⇒ x × 25/100 = 1200

⇒ x = 4800

∴ No. of MD and CEO on Friday = 4800 - 1200 = 3600

Ratio of MD and CEO on Friday = 1 ? 1

∴ No. of CEO on Friday = 3600 × 1/2 = 1800

∴ Total no. of CEO,

⇒ 2600 + 2800 + 1600 + 2000 + 1800

⇒ 10800

∴ Required difference,

⇒ 10800 - 8600