The following table shows the number of watches of 5 brands sold by two showrooms.

M = per brand average number of watches sold from Showroom 1
What is the ratio of the number of watches of Brand 3 sold from Showroom 2 to M?

25 : 29

⇒ M = per brand average number of watches sold from Showroom 1

= \(\frac{60+55+75+48+52 }{5}\) 

= \(\frac{ 290 }{5}\)

= 58

⇒ Watches of brand 3 sold from showroom 2   :    M

⇒ 50  :   58

⇒ 25  :   29