Question

Average income of 50 families is rupees 3,000. of these average income of 12 families is rupees 1,800 .find out the average income of the remaining families.

Answer 1

Average income of 50 families = 3000
Total income of 50 families
=3000 x 50 = Rs 1,50,000
Now,
Average income of 12 families = 1800
So, total income of 12 families
= 1800* 12 = Rs 2,16,00

Total income of remaining 38 families
= 150000 - 21600 = Rs 1,28,400

Therefore,
Average income of remaining 38 families = 128400/38 = Rs 3,378.94 = Rs 3379 (approx.)

Answer 2

Answer:

The average income of the remaining families is $Rs. 3378.94$, approximately $Rs. 3379$.

Explanation:

It is given that the average income of $50$ families $= 3000$

Then the total income of $50$ families will be :

$=3000 * 50 = Rs 1,50,000$

Now,

Average income of $12$ families $= 1800$

So, total income of $12$ families

$= 1800* 12 = Rs 2,16,00$

Total income of remaining $38$ families

$= 150000 - 21600 = Rs 1,28,400$

Therefore,

Average income of remaining $38$ families

$=$ Total income divided by number of families

$= 128400/38$

$= Rs 3,378.94$

$= Rs 3379$ (approx.)