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The first table gives the percentage of students in the class of M.B.A who sought employment in the areas of Finance, Marketing and Software. The second table given the average starting salaries of the students per month, in these areas.  The number of students who got jobs in finance is less than the number of students getting marketing jobs, in the five years, by

1. $826$
2. $650$
3. $725$
4. $548$

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I'll make a table first which include all the data :

Year No. of students employed No. of finance students employed No. of marketing students employed
$1992$ $800$ $22\% \times 800 = 176$ $36\% \times 800 = 288$
$1993$ $650$ $17\% \times 650 = 110.5$ $48\% \times 650 = 312$
$1994$ $1100$ $23\% \times 1100 = 253$ $43\% \times 1100 = 473$
$1995$ $1200$ $19\% \times 1200 = 228$ $37\% \times 1200 = 444$
$1996$ $1000$ $32\% \times 1000 = 320$ $32\% \times 1000 = 320$

∴ Total No. of finance students employed in $5$ years = $(176 + 110.5 + 253 + 228 + 320) = 1087.5$

Total No. of marketing students employed in $5$ years = $(288 + 312 + 473 + 444 + 320) = 1837$

∴ The number of students who got jobs in finance is less than the number of students getting marketing jobs, in five years, by $(1837 - 1087.5) = 749.5 \approx 750$

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