Question

The average monthly income of a four members of a family is Rs 610.25 after the marriage of one girl the average income of the family becomes Rs 650 75, then the salary of married girl is

• A. $Rs488.25$
• B. $Rs488.75$
• C. $Rs479.75$
• D. $Rs489.25$

Answer 1

Answer: (B)

$Rs488.75$

The average monthly income of four members=Rs.610.25

$\therefore$Total income of the 4 members=$610.25\times 4=Rs.2441$

After marriage of one girl there are 3 members left in the family.

And average of the 3 members of the family=Rs.650.75

$\therefore$Total income of the 3 members$=650.75\times 3=Rs.1952.25$

Then the salary of the married girl$=2441-1952.25=Rs.488.75$