Question

plz give answer
I need this urgent

Answer 1

HEY!!

THE ANSWER IS HERE,

Per capita income of 4 families is $15,000.

Income of 3 families are $10,000 ; $20,000 ; $12,000.

Per capita income= Total income / total population.

Let the income of 4th family be x.Then

15,000=(10,000+20,000+ 12,000+x)/4

=>60,000 = 42,000+x

=> x =60,000-42,000.

=> x = $18,000.

so, the income of 4th family is $18,000.

:-)Hope it helps u.

Answer 2

10000+12000+20000+(x)= 42000+(x)
 ---------------------------------    -------------- = 15000
                                                   4
42000+(x)= 60000
x=60000-42000
x= 18000