Question

The average age of 5 friends is 33 if rani is replaced by raju the average age of group become 31.8 what is the age difference

Answer 1

Answer:

the age difference is 6...

Step-by-step explanation:

let age of first 4 friends = a, b, c, d

let raju's age = e

let rani's age = f

Answer 2

Answer:

The age difference of Rani and Raju = 6 years

Step-by-step explanation:

Given :

• The average age of 5 friends = 33
• If Rani is replaced by Raju then the average age  = 31.8

To Find :

The age difference of Rani and Raju

Solution :

Since we are given the average age of 5 friends which is 33

then the total age of all 5 students  = average age x total students

                                                           = 33 x 5 = 165

If Rani is replaced by Raju then the average age  = 31.8

after replacing the total age of all 5 students = average age x total students                                              

                                                            = 31.8 x 5 = 159

Difference between the age of Rani and the age of Raju = Total age before replacing - Total age after replacing

                                                               = 165 - 159

                                                               = 6 years

Hence the age difference of Rani and Raju = 6 years

#SPJ2