A man spends Rs.,1800 monthly on an average for first four months and Rs.,2000 monthly for next eigh

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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

Total expenditure of the man in a year

$=Rs.\,(4 \times 1800+8 \times 2000)$

$=Rs.\,(7200+16,000)=R s.\, 23,200$

Total annual income

$=Rs.\,(23,200+5600)$

$=228,800$

$\therefore \text { Average monthly income }=Rs.\, \frac{28800}{12}=Rs.\, 2400$

Standard 13

Quantitative Aptitude

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