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- Quantitative Aptitude
4.Average
medium
Ashish has earned an average of $4200$ dollars for the first eleven months of the year. If he justifies his staying on in the US on the basis of his ability to earn at least $5000$ dollars per $month$ for the entire $year,$ how much should heearn (in $dollars$) in the last $month$ to achieve his required average for the whole $year$ ?
A
$14600$
B
$5800$
C
$12800$
D
$13800$
Solution
Ashish total earnings of $11$ months
$=4200 \times 11=46,200 $
Total earnings to be needed for $12$ $months$.
$=5000 \times 12=60,000 $
Last month earnings $=60,000-46,200=13,800 $
Standard 13
Quantitative Aptitude
