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4.Average
easy
Amitabh's average expenditure for the $January$ to $June$ is $Rs.\, 4200$ and he spends $Rs.\, 1200$ in $January$ and $Rs. \,1500$ in $July.$ The average expenditure for the month of $February$ to $July$ is (in $Rs.$)
A
$4250$
B
$4520$
C
$4060$
D
$4200$
Solution
Total expenditure of Jan to June $=4200 \times 6$ $=$ Rs. 25200
Total expenditure from Feb to July
$=25200-1200+1500=$ $Rs. \,25500$
Average $=\frac{25500}{6}=$ $Rs. \,4250$
Standard 13
Quantitative Aptitude
