The average salary of three teachers is Rs. 6400 per week. If one earns Rs. 22500 and second earns Rs. 28000 per month, how much is the monthly salary of the third teacher. [Assume a month contains 4 weeks]
(a)Rs. 26300 (b)Rs. 25800 (c)Rs. 28500 (d)Rs. 24600

• Assume ------>>>>>>a month contains 4 weeks
  ------->>>>>First teacher be x
  -------->>>>>second teacher be y
  --------->>>>>Third teacher be z
  
  
  Average salary of three teachers is x+y+z=6400
  ----------
  3
  
  then x+y+z = 6400*3 = 19200 per week
  As mentioned in the above a month contains 4 weeks then 19200*4 = 76800
  
  if x = 22500
  y = 28000
  then z= 76800 - (22500+28000) = 26300
  Third teacher salary z = 23600
• 4 years agoHelpfull: Yes(4) No(0)
• 26300
  average of their salaries is equal to 4 times the average salary per week
• 4 years agoHelpfull: Yes(1) No(0)
• A)26300
  First we have to calculate monthly avg incme of 3 teachers which is= (6400×4)=25600
  Now total sal of two teachers= (22500+28000)
  Sal of 3rd teacher=(76800-50500)=26300
• 4 years agoHelpfull: Yes(0) No(0)
• for 1 week 6400 Rs.
  so for 4 week it is = 4*6400 = 25600
  avg= (22500+28000+x)/3
  3*25600= 50500+X
  therefore, x=76800-50500=26300.
• 3 years agoHelpfull: Yes(0) No(0)