The average monthly income of a person in a certain family of 5 is Rs. 1000. What will be the monthly average income of a person in the same family if the income of one person increased by Rs. 12,000 per year?
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UPSC Civil Services preparation
- ARs. 1200Correct
- BRs. 1600
- CRs. 2000
- DRs. 3400
Explanation
Step 1 Calculate the initial total monthly income. Since the average monthly income for 5 people is 1000, the total monthly income is 5 multiplied by 1000, which equals 5000.
Step 2 Calculate the monthly increase in income. One person s income increased by 12,000 per year. To find the monthly increase, divide 12,000 by 12 months, which equals 1000 per month.
Step 3 Calculate the new total monthly income. Add the monthly increase to the initial total monthly income. 5000 plus 1000 equals 6000.
Step 4 Calculate the new average monthly income. Divide the new total monthly income by the number of family members. 6000 divided by 5 equals 1200.
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