Janet is 3 yrs older than her sister julie. janet brother is eight yrs younger than their sister julie. the sum of all their ages is 55 yrs

Janet: x + 3

Julie: x

brother: x - 8

Janet + Julie + brother = sum

x + 3  +   x     +   x - 8    =  55

3x - 5 = 55

    +5   +5

3x      = 60

x = 20

Janet: x + 3   ⇒   (20) + 3   = 23

brother: x - 8   ⇒   (20) - 8   = 12

Janet=23, Julie=20, brother=12

chiken

step-by-step explanation: