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,

⇒ b × 33.33 × 1/100 = 2000

⇒ b = 6000

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

Ratio of MD and CEO on Saturday = 3 ? 7

∴ No. of MD on Saturday = 4000 × 3/10 = 1200

Let, total no. of employee on Monday = C

According to problem,

⇒ 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 MD on Tuesday = 3500 × 3/7 = 1500

∴ Total number of MD on Saturday and CEO on Monday together,

⇒ 1200 + 1600

⇒ 2800

∴ Total number of MD on Tuesday and CEO on Sunday together,

⇒ 1500 + 2600

⇒ 4100

∴ Required Percentage,

⇒ (4100 - 2800)/4100 × 100%