Question

Suppose there are 4 families in a country with per capita income 15000. 10000, 20000, 12000 respectively. what is the income of 4th family

Answer 1

10000+20000+12000+x/4=15000
42000+x=60000
x=18000.
income of fourth family is 18000.

Answer 2

The income of the 4th family is 18000 rupees.

Explanation:

Given:

Per capita income 15000 rupees.

Income of the 3 families 10000, 20000, 12000

To find:

Income of the 4th family.

Step by step explanation:

Let the income of 4th family be f.

Per capita income =$\frac{total income}{total population}$

$15,000$ = $\frac{10,000+20,000+12,000+ f}{4}$

$15,000*4 = 42,000+f$

$60,000 = 42,000 + f$

$f = 60,000 - 42,000$

$f = 18,000$

Final answer:

Income of the 4th family is $18,000$ rupees.