The main income of a person is rupees 400 another group of a person has meaning come rupees 480 if the meaning come of all persons in to group together is rupees 430, then the ratio of the number of persons in the group, please.
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Given:
"Average income" of 5 persons in a family is Rs. 1000
The "income" of a person increase Rs. 12000 per year
To find:
New average income of one person
Solution:
The sum of the income of five members in a family is Rs Y
The average salary of the 5 members is = Rs. 1000
y = 5000
If monthly income of 1 person increase by Rs. 12000 every year
Then the average income of the family increases by
= Rs. 1000
Sum of 5 members income after the increase = y + 1000
= 5000 + 1000 = Rs. 6000
New average income of the family
= Rs. 1200
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