30 പേരുടെ ശരാശരി വയസ്സ് 25. 10 പേർ കൂടി ചേർന്നപ്പോൾ അത് 30 ആയി.എങ്കിൽ പുതിയതായി വന്നു ചേർന്നവരുടെ ശരാശരി വയസ്സെത്ര ?
A30
B35
C40
D45
No.1 PSC Learning App
★
★
★
★
★
Related Questions:
Average number of chocolates distributed in a class of 40 students is 5. If x number of students joined newly in the class and the average goes to 4, then find the number of students newly joined?
The average age of four brothers is 12 years. If the age of their mother is also included, the average is increased by 5 years. The age of the mother (in years) is :
The sum of 10 numbers is 408. Find their average.
The average age of 40 students of a class is 18 years. When 20 new students are admitted to the same class, the average age of the students of the class is increased by 6 months. The average age of newly admitted students is
If a person weighing 40 kg leaves a group of 5 children and is replaced by a person weighing 55 kg, what will be the difference in the average weight?