Question

The average age of five persons in a group is 18 years. The group has an additional

member, such that the new average is 25 years less than the age of the new member.

What is the age(in years) of the new member​

Answer 1

Answer:

48years

Step-by-step explanation:

average age of 5 person = 18

sum total of age of 5 person = 18×5 = 90

new average on addition of new members = (90+x)÷6 = x -25.....{ let x be age of New member}

=> 90+x = 6(x-25)

=> 90+x = 6x - 150

=> 6x-x = 90+150

=> 5x = 240

=> x = 240/5

=> x = 48 years

Answer 2

thanks for the answer #MagicalBeast