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A man spends $Rs.\, 1800$ monthly on an average for the first four months and $Rs. \,2000$ monthly for the next eight months and saves $Rs. \,5600$ a year. His average monthly income is (in $Rs.\,$)
A
$2000$
B
$2200$
C
$2400$
D
$2600$
Solution
Sum of expenditure for first four months $=1800 \times 4=$ Rs. $7200$
Sum of expenditure for next eight months $=2000 \times 8=16000$ Rs
saving $=5600$ Rs.
Average monthly Income
$=\frac{7200+16000+5600}{12}=\frac{28800}{12}=$ Rs. 2400
Standard 13
Quantitative Aptitude
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